diff --git a/.drone.yml b/.drone.yml
index 80e60ab..1ca1490 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -1,6 +1,7 @@
 ---
 kind: pipeline
 name: default
+type: docker
 
 steps:
 - name: docker
diff --git a/Dockerfile b/Dockerfile
index bfe26fc..7e94534 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,13 +1,12 @@
-FROM python:3.9-alpine3.13
+FROM yavook/kiwi-cron:0.2
 LABEL maintainer="jmm@yavook.de"
 
-# Previous work: https://github.com/wernight/docker-duplicity
+COPY requirements.txt /tmp/
 
+# full install of duplicity distribution
 RUN set -ex; \
     \
-    # create backup source
-    mkdir -p /backup/source; \
-    \
+    # duplicity software dependencies
     apk --no-cache add \
         ca-certificates \
         gettext \
@@ -19,13 +18,15 @@ RUN set -ex; \
         libxslt \
         openssh-client \
         openssl \
+        python3 \
         rsync \
     ; \
     update-ca-certificates; \
     \
-    # dependencies to build python packages
+    # python packages buildtime dependencies
     apk --no-cache add --virtual .build-deps \
         gcc \
+        git \
         libffi-dev \
         librsync-dev \
         libxml2-dev \
@@ -33,54 +34,55 @@ RUN set -ex; \
         make \
         musl-dev \
         openssl-dev \
+        python3-dev \
+        py3-pip \
+        cargo \
+    ; \
+    # make use of prebuilt wheels where possible
+    python3 -m pip --no-cache-dir \
+        install wheel \
     ; \
     \
-    # make use of "wheel" python packages
-    pip3 --no-cache-dir install wheel ; \
-    \
-    pip3 --no-cache-dir install \
-        # main app
-        duplicity \
-        \
-        # general duplicity requirements, based on
-        # http://duplicity.nongnu.org/vers8/README
-        # https://git.launchpad.net/duplicity/tree/requirements.txt
-        fasteners \
-        future \
-        mock \
-        paramiko \
-        python-gettext \
-        requests \
-        urllib3 \
-        \
-        # backend requirements
-        azure-mgmt-storage \
-        b2sdk \
-        boto \
-        boto3 \
-        dropbox \
-        gdata \
-        jottalib \
-        mediafire \
-        mega.py \
-        pydrive \
-        pyrax \
-        python-swiftclient \
-        requests_oauthlib \
+    # install duplicity
+    python3 -m pip --no-cache-dir \
+        install -r /tmp/requirements.txt \
+    ; \
+    python3 -m pip --no-cache-dir \
+        install duplicity \
     ; \
     \
-    # remove buildtime dependencies
-    pip3 --no-cache-dir uninstall -y wheel; \
-    apk del --purge .build-deps
+    # cleanup
+    python3 -m pip --no-cache-dir \
+        uninstall -y wheel \
+    ; \
+    apk del --purge .build-deps; \
+    rm -f "/tmp/requirements.txt"; \
+    rm -rf "${HOME}/.cargo";
 
-VOLUME ["/root/.cache/duplicity", "/backup/target"]
+# start of kiwi additions here
+RUN set -ex; \
+    \
+    # create /kiwi-backup directory structure
+    mkdir -m 777 /kiwi-backup; \
+    mkdir -m 777 /kiwi-backup/source; \
+    mkdir -m 777 /kiwi-backup/target; \
+    \
+    # we need to run as root in container.
+    # otherwise, we might miss directories in backup source!
+    mkdir -p "/root/.cache/duplicity"; \
+    mkdir -pm 700 "/root/.gnupg"; \
+    \
+    # confirm duplicity is working
+    duplicity --version;
+
+VOLUME [ "/root/.cache/duplicity" ]
 
 ENV \
     #################
     # BACKUP POLICY #
     #################
-    SCHEDULE_BACKUP="36 02 * * *" \
-    SCHEDULE_CLEANUP="36 04 * * *" \
+    SCHEDULE_BACKUP="R 2 * * *" \
+    SCHEDULE_CLEANUP="R 4 * * *" \
     FULL_BACKUP_FREQUENCY=3M \
     BACKUP_RETENTION_TIME=6M \
     KEEP_NUM_FULL_CHAINS=2 \
@@ -88,10 +90,11 @@ ENV \
     ######################
     # ADDITIONAL OPTIONS #
     ######################
-    SCHEDULE_RMFULL="36 05 * * SAT" \
-    SCHEDULE_RMINCR="36 05 * * SUN" \
+    SCHEDULE_RMFULL="R 5 * * SAT" \
+    SCHEDULE_RMINCR="R 5 * * SUN" \
     BACKUP_VOLSIZE=1024 \
-    BACKUP_TARGET="file:///backup/target" \
+    BACKUP_SOURCE="/kiwi-backup/source" \
+    BACKUP_TARGET="file:///kiwi-backup/target" \
     OPTIONS_ALL="" \
     OPTIONS_BACKUP="" \
     OPTIONS_CLEANUP="" \
@@ -104,6 +107,7 @@ ENV \
     GPG_KEY_ID="" \
     GPG_PASSPHRASE=""
 
-COPY do-plicity /usr/local/bin/
+COPY bin /usr/local/bin/
+COPY libexec /usr/local/libexec/
 
-CMD ["do-plicity"]
+CMD [ "kiwi-backup" ]
diff --git a/README.md b/README.md
index 7a8cf25..db8015f 100644
--- a/README.md
+++ b/README.md
@@ -4,20 +4,20 @@
 
 > `kiwi` - simple, consistent, powerful
 
-The backup solution for [`kiwi-scp`](https://github.com/yavook/kiwi-scp)
+The backup solution for [`kiwi-scp`](https://github.com/yavook/kiwi-scp). Also [on Docker Hub](https://hub.docker.com/r/yavook/kiwi-backup).
 
 ## Quick start
 
-kiwi-backup is an image with [duplicity](http://duplicity.nongnu.org/), tailored to backup service data of `kiwi-scp` instances.
+kiwi-backup is an image with [duplicity](https://duplicity.gitlab.io/duplicity-web/), tailored to backup service data of `kiwi-scp` instances.
 
 If you want backups in the host directory `/var/local/kiwi.backup`, just add this to one of your projects' `docker-compose.yml` to use the default configuration.
 
 ```yaml
 backup:
-  image: yavook/kiwi-backup
+  image: yavook/kiwi-backup:0.10
   volumes:
-    - "${KIWI_INSTANCE}:/backup/source:ro"
-    - "/var/local/kiwi.backup:/backup/target"
+    - "${KIWI_INSTANCE}:/kiwi-backup/source:ro"
+    - "/var/local/kiwi.backup:/kiwi-backup/target"
 ```
 
 - backups the entire service data directory
@@ -26,7 +26,7 @@ backup:
 - a new full backup once every 3 months
 - keeps backups up to 6 months old
 - keeps daily backups for two recent sets (3-6 months)
-- backup jobs run at 02:36 am UTC (time chosen by fair dice roll)
+- backup jobs run at a random minute past 2 am
 
 Be aware though -- backups will use a fair bit of storage space!
 
@@ -34,21 +34,27 @@ Be aware though -- backups will use a fair bit of storage space!
 
 The kiwi-backup image allows for extensive customization even without creating a local image variant.
 
-Schedules in environment variables are to be provided [in cron notation](https://crontab.guru/).
+Schedules in environment variables are to be provided [in cron notation](https://crontab.guru/). Additionally, the special value "R" is supported and will be replaced by a random value.
+
+### Time Zones
+
+Being based on [`kiwi-cron`](https://github.com/yavook/kiwi-cron), `kiwi-backup` makes changing time zones easy. Just change the container environment variable `TZ` to your liking, e.g. "Europe/Berlin".
 
 ### Backup Scope
 
-kiwi-backup will backup everything in its `/backup/source` directory -- change the backup scope by adjusting what's mounted into that container directory.
+kiwi-backup will backup everything in its `/kiwi-backup/source` directory -- change the backup scope by adjusting what's mounted into that container directory.
 
 ```yaml
 backup:
   # ...
   volumes:
     # change scope here!
-    - "${KIWI_INSTANCE}:/backup/source:ro"
+    - "${KIWI_INSTANCE}:/kiwi-backup/source:ro"
 ```
 
-You may of course create additional sources below the `/backup/source` directory to limit the backup to specific projects or services. For added safety, mount your backup sources read-only by appending `:ro`.
+You may of course create additional sources below the `/kiwi-backup/source` directory to limit the backup to specific projects or services. For added safety, mount your backup source(s) read-only by appending `:ro`.
+
+You may also change the container environment variable `BACKUP_SOURCE`, though this is discouraged.
 
 ### Backup policy
 
@@ -61,12 +67,12 @@ backup:
     # ...
 
     # when to run backups
-    # default: daily at 02:36 am UTC
-    SCHEDULE_BACKUP: "36 02 * * *"
+    # default: daily at a random minute past 2 am
+    SCHEDULE_BACKUP: "R 2 * * *"
     
     # when to remove leftovers from failed transactions
-    # default: daily at 04:36 am UTC
-    SCHEDULE_CLEANUP: "36 04 * * *"
+    # default: daily at a random minute past 4 am
+    SCHEDULE_CLEANUP: "R 4 * * *"
     
     # how often to opt for a full backup
     # default: every 3 months
@@ -89,14 +95,14 @@ There are three major ways to for inject secrets into `kiwi-backup` environments
 
 #### Container environment
 
-Just fire up your container using `docker run -e "FTP_PASSWORD=my_secret_here" yavook/kiwi-backup`
+Just fire up your container using `docker run -e "FTP_PASSWORD=my_secret_here" yavook/kiwi-backup:0.10`
 
 #### Image environment
 
 Create a simple `Dockerfile` from following template.
 
 ```Dockerfile
-FROM yavook/kiwi-backup
+FROM yavook/kiwi-backup:0.10
 ENV FTP_PASSWORD="my_secret_here"
 ```
 
@@ -123,20 +129,24 @@ backup:
     # ...
 
     # when to remove old full backup chains
-    # default: every saturday at 05:36 am UTC
-    SCHEDULE_RMFULL: "36 05 * * SAT"
+    # default: every Saturday at a random minute past 5 am
+    SCHEDULE_RMFULL: "R 5 * * SAT"
 
     # when to remove old incremental backups
-    # default: every sunday at 05:36 am UTC
-    SCHEDULE_RMINCR: "36 05 * * SUN"
+    # default: every Sunday at a random minute past 5 am
+    SCHEDULE_RMINCR: "R 5 * * SUN"
     
     # size of individual duplicity data volumes
     # default: 1GiB
     BACKUP_VOLSIZE: "1024"
     
+    # what to base backups on
+    # default: container directory "/kiwi-backup/source", usually mounted volume(s)
+    BACKUP_SOURCE: "/kiwi-backup/source"
+    
     # where to put backups
-    # default: some docker volume
-    BACKUP_TARGET: "file:///backup/target"
+    # default: container directory "/kiwi-backup/target", usually a mounted volume
+    BACKUP_TARGET: "file:///kiwi-backup/target"
     
     # Additional options for all "duplicity" commands
     OPTIONS_ALL: ""
@@ -175,26 +185,26 @@ Reasonable defaults for a backup encryption key are:
 To quickly generate a key, use the following command, then enter a passphrase:
 
 ```sh
-docker run --rm -it -v "gnupg.tmp:/root/.gnupg" yavook/kiwi-backup gpg --quick-gen-key --yes "Administrator <root@my-hostname.com>" rsa4096 encr never
+docker run --rm -it -v "kiwi-backup.gnupg.tmp:/root/.gnupg" yavook/kiwi-backup:0.10 gpg --quick-gen-key --yes "Administrator <root@my-hostname.com>" rsa4096 encr never
 ```
 
 To get a more in-depth generation wizard instead, use `gpg --full-gen-key` command without any more args and follow through.
 
 ### Export the generated key
 
-This one-liner exports your generated key into a new subdirectory "backup":
+This one-liner exports your generated key into a new subdirectory "kiwi-backup.gnupg":
 
 ```sh
-docker run --rm -it -v "gnupg.tmp:/root/.gnupg" -v "$(pwd)/backup:/root/backup" -e "CURRENT_USER=$(id -u):$(id -g)" yavook/kiwi-backup sh -c 'cd /root/backup && gpg --export-secret-keys --armor > secret.asc && gpg --export-ownertrust > ownertrust.txt && chown -R "${CURRENT_USER}" .'
+docker run --rm -it -v "kiwi-backup.gnupg.tmp:/root/.gnupg" -v "$(pwd)/kiwi-backup.gnupg:/root/kiwi-backup.gnupg" -e "CURRENT_USER=$(id -u):$(id -g)" yavook/kiwi-backup:0.10 sh -c 'cd /root/kiwi-backup.gnupg && gpg --export-secret-keys --armor > secret.asc && gpg --export-ownertrust > ownertrust.txt && chown -R "${CURRENT_USER}" .'
 ```
 
-You'll now find the "backup" subdirectory with files "secret.asc" and "ownertrust.txt" in it. Check your exported files:
+You'll now find the "kiwi-backup.gnupg" subdirectory with files "secret.asc" and "ownertrust.txt" in it. Check your exported files:
 
 ```sh
-docker run --rm -v "$(pwd)/backup:/root/backup:ro" yavook/kiwi-backup sh -c 'cd /root/backup && gpg --import --batch secret.asc 2>/dev/null && gpg --import-ownertrust ownertrust.txt 2>/dev/null && gpg -k 2>/dev/null | grep -A1 "^pub" | xargs | tail -c17'
+docker run --rm -v "$(pwd)/kiwi-backup.gnupg:/root/kiwi-backup.gnupg:ro" yavook/kiwi-backup:0.10 sh -c 'cd /root/kiwi-backup.gnupg && gpg --import --batch secret.asc 2>/dev/null && gpg --import-ownertrust ownertrust.txt 2>/dev/null && gpg -k 2>/dev/null | grep -A1 "^pub" | xargs | tail -c17'
 ```
 
-This should output your 16-digit Key-ID, so take note of it if you haven't already! Afterwards, run `docker volume rm gnupg.tmp` to get rid of the key generation volume.
+This should output your 16-digit Key-ID, so take note of it if you haven't already! Afterwards, run `docker volume rm kiwi-backup.gnupg.tmp` to get rid of the key generation volume.
 
 ### Using a pre-generated key
 
@@ -208,7 +218,7 @@ gpg --export-ownertrust > backup/ownertrust.txt
 You can still check your exported files :)
 
 ```sh
-docker run --rm -v "$(pwd)/backup:/root/backup:ro" yavook/kiwi-backup sh -c 'cd /root/backup && gpg --import --batch secret.asc && gpg --import-ownertrust ownertrust.txt && gpg -k'
+docker run --rm -v "$(pwd)/kiwi-backup.gnupg:/root/kiwi-backup.gnupg:ro" yavook/kiwi-backup:0.10 sh -c 'cd /root/kiwi-backup.gnupg && gpg --import --batch secret.asc && gpg --import-ownertrust ownertrust.txt && gpg -k'
 ```
 
 ### Describe local kiwi-backup image
@@ -216,7 +226,7 @@ docker run --rm -v "$(pwd)/backup:/root/backup:ro" yavook/kiwi-backup sh -c 'cd
 Now create a simple `Dockerfile` inside the "backup" directory from following template.
 
 ```Dockerfile
-FROM yavook/kiwi-backup
+FROM yavook/kiwi-backup:0.10
 
 COPY secret.asc ownertrust.txt /root/
 
@@ -237,7 +247,7 @@ All that's left is to come back to your project's `docker-compose.yml`, where yo
 
 ```yaml
 backup:
-  image: yavook/kiwi-backup
+  image: yavook/kiwi-backup:0.10
   # ...
 ```
 
@@ -253,3 +263,4 @@ That's it -- from now on, all new backups will be encrypted!
 
 ## Offsite Backups
 
+TODO
diff --git a/bin/kiwi-backup b/bin/kiwi-backup
new file mode 100755
index 0000000..0208e18
--- /dev/null
+++ b/bin/kiwi-backup
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+exec /usr/local/libexec/kiwi-cron/run_cron \
+  "${@}" \
+  /usr/local/libexec/kiwi-backup/scheduler
diff --git a/do-plicity b/do-plicity
deleted file mode 100755
index 6d310cf..0000000
--- a/do-plicity
+++ /dev/null
@@ -1,177 +0,0 @@
-#!/bin/sh
-
-#############
-# CONSTANTS #
-#############
-
-# commands
-this_exe="$(command -v "${0}")"
-ionice_exe="$(command -v ionice)"
-duplicity_exe="$(command -v duplicity)"
-
-# files
-duplicity_secrets_file='/root/duplicity_secrets'
-
-#############
-# FUNCTIONS #
-#############
-
-append_options() {
-    ao_cmdline="${1}"
-    ao_options="${2}"
-    shift 1
-
-    if [ -n "${ao_cmdline}" ] && [ -n "${ao_options}" ]; then
-        # if both are given, stitch together with a space
-        echo "${ao_cmdline} ${ao_options}"
-    elif [ -n "${ao_options}" ]; then
-        # if only options are given, output them
-        echo "${ao_options}"
-    else
-        # if at most a cmdline is given, output that
-        echo "${ao_cmdline}"
-    fi
-}
-
-print_command() {
-    pc_task="${1}"
-    shift 1
-
-    pc_cmdline="${ionice_exe} -c 3 ${duplicity_exe}"
-    pc_cmdline="$( append_options "${pc_cmdline}" "${OPTIONS_ALL}" )"
-
-    case "${pc_task}" in
-        backup)
-            pc_cmdline="$( append_options "${pc_cmdline}" "--allow-source-mismatch" )"
-            pc_cmdline="$( append_options "${pc_cmdline}" "--volsize ${BACKUP_VOLSIZE}" )"
-            pc_cmdline="$( append_options "${pc_cmdline}" "--full-if-older-than ${FULL_BACKUP_FREQUENCY}" )"
-            pc_cmdline="$( append_options "${pc_cmdline}" "${OPTIONS_BACKUP}" )"
-            pc_cmdline="$( append_options "${pc_cmdline}" "/backup/source" )"
-            ;;
-        
-        cleanup)
-            pc_cmdline="$( append_options "${pc_cmdline}" "cleanup --force" )"
-            pc_cmdline="$( append_options "${pc_cmdline}" "${OPTIONS_CLEAN}" )"
-            ;;
-        
-        rmfull)
-            pc_cmdline="$( append_options "${pc_cmdline}" "remove-older-than ${BACKUP_RETENTION_TIME} --force" )"
-            pc_cmdline="$( append_options "${pc_cmdline}" "${OPTIONS_RMFULL}" )"
-            ;;
-        
-        rmincr)
-            pc_cmdline="$( append_options "${pc_cmdline}" "remove-all-inc-of-but-n-full ${KEEP_NUM_FULL_CHAINS} --force" )"
-            pc_cmdline="$( append_options "${pc_cmdline}" "${OPTIONS_RMINCR}" )"
-            ;;
-    esac
-
-    pc_cmdline="${pc_cmdline} ${BACKUP_TARGET}"
-    echo "${pc_cmdline}"
-}
-
-print_cron_schedule() {
-    pcs_min="$(     echo "${1}" | awk '{print $1}' )"
-    pcs_hour="$(    echo "${1}" | awk '{print $2}' )"
-    pcs_day="$(     echo "${1}" | awk '{print $3}' )"
-    pcs_month="$(   echo "${1}" | awk '{print $4}' )"
-    pcs_weekday="$( echo "${1}" | awk '{print $5}' )"
-    pcs_command="${2}"
-    shift 2
-    
-    printf '%-8s%-8s%-8s%-8s%-8s%s\n' "${pcs_min}" "${pcs_hour}" "${pcs_day}" "${pcs_month}" "${pcs_weekday}" "${pcs_command}"
-}
-
-print_crontab() {
-    echo   '# crontab generated for kiwi-backup'
-    printf '# generation time: '; date
-    echo   '#'
-
-    # don't split the '#' from 'min'
-    print_cron_schedule '#_min hour day month weekday' 'command' | tr '_' ' '
-
-    print_cron_schedule "${SCHEDULE_BACKUP}"  "${this_exe} backup"
-    print_cron_schedule "${SCHEDULE_CLEANUP}" "${this_exe} cleanup"
-    print_cron_schedule "${SCHEDULE_RMFULL}"  "${this_exe} rmfull"
-    print_cron_schedule "${SCHEDULE_RMINCR}"  "${this_exe} rmincr"
-}
-
-###############
-# ENVIRONMENT #
-###############
-
-# load secrets file
-if [ -f "${duplicity_secrets_file}" ]; then
-    # shellcheck disable=SC1090
-    . "${duplicity_secrets_file}"
-fi
-
-# check if uses encryption
-if [ -n "${GPG_KEY_ID}" ]; then
-    # gpg key given
-    OPTIONS_ALL="$( append_options "${OPTIONS_ALL}" "--encrypt-key=${GPG_KEY_ID}" )"
-
-    # handle more verbose "GPG_PASSPHRASE" env_var
-    PASSPHRASE="${GPG_PASSPHRASE:-${PASSPHRASE}}"
-    export PASSPHRASE
-    unset GPG_PASSPHRASE
-else
-    # no key given
-    OPTIONS_ALL="$( append_options "${OPTIONS_ALL}" "--no-encryption" )"
-fi
-
-########
-# MAIN #
-########
-
-if [ "${#}" -gt 0 ]; then
-
-    # CLI
-    task="${1}"
-    shift 1
-
-    # run task
-    case "${task}" in
-        print-*)
-            task="${task##*-}"
-
-            case "${task}" in
-                # print out the crontab
-                crontab)
-                    print_crontab
-                    ;;
-                
-                # print out a task
-                backup|cleanup|rmfull|rmincr)
-                    print_command "${task}"
-                    ;;
-
-                # unknown task
-                *)
-                    >&2 echo "Cannot print '${task}'."
-                    >&2 echo "Choose from: crontab, backup, cleanup, rmfull, rmincr"
-                    exit 1
-                    ;;
-            esac
-            ;;
-
-        # execute single task
-        backup|cleanup|rmfull|rmincr)
-            # shellcheck disable=SC2091
-            $(print_command "${task}")
-            ;;
-
-        # unknown task
-        *)
-            >&2 echo "Unknown task '${task}'."
-            >&2 echo "Choose from: backup, cleanup, rmfull, rmincr"
-            exit 1
-            ;;
-    esac
-else
-
-    # default run: replace crontab, then start crond
-    print_crontab | crontab -
-    crond -fl 8
-fi
-
-exit 0
\ No newline at end of file
diff --git a/libexec/kiwi-backup/build_command b/libexec/kiwi-backup/build_command
new file mode 100755
index 0000000..6232c11
--- /dev/null
+++ b/libexec/kiwi-backup/build_command
@@ -0,0 +1,81 @@
+#!/bin/sh
+
+#############
+# CONSTANTS #
+#############
+
+# commands
+ionice_exe="$(command -v ionice)"
+duplicity_exe="$(command -v duplicity)"
+
+# files
+duplicity_secrets_file="/root/duplicity_secrets"
+
+########
+# MAIN #
+########
+
+# load secrets file
+if [ -f "${duplicity_secrets_file}" ]; then
+    # shellcheck disable=SC1090
+    . "${duplicity_secrets_file}"
+fi
+
+# check if uses encryption
+if [ -n "${GPG_KEY_ID}" ]; then
+    # gpg key given
+    options_encryption="--encrypt-key=${GPG_KEY_ID}"
+
+    # handle more verbose "GPG_PASSPHRASE" env_var
+    PASSPHRASE="${GPG_PASSPHRASE:-${PASSPHRASE}}"
+    export PASSPHRASE
+    unset GPG_PASSPHRASE
+else
+    # no key given
+    options_encryption="--no-encryption"
+fi
+
+task="${1}"
+shift 1
+
+add_space () {
+  if [ -n "${1}" ]; then
+    echo " ${1}"
+  fi
+}
+
+printf "%s -c 3 %s%s %s" \
+  "${ionice_exe}" \
+  "${duplicity_exe}" \
+  "$( add_space "${OPTIONS_ALL}" )" \
+  "${options_encryption}"
+
+case "${task}" in
+  backup)
+    printf ' --allow-source-mismatch'
+    printf ' --volsize %s' "${BACKUP_VOLSIZE}"
+    printf ' --full-if-older-than %s' "${FULL_BACKUP_FREQUENCY}"
+    printf '%s' "$( add_space "${OPTIONS_BACKUP}" )"
+    printf ' %s' "${BACKUP_SOURCE}"
+    ;;
+
+  cleanup)
+    printf ' cleanup'
+    printf ' --force'
+    printf '%s' "$( add_space "${OPTIONS_CLEAN}" )"
+    ;;
+
+  rmfull)
+    printf ' remove-older-than %s' "${BACKUP_RETENTION_TIME}"
+    printf ' --force'
+    printf '%s' "$( add_space "${OPTIONS_RMFULL}" )"
+    ;;
+
+  rmincr)
+    printf ' remove-all-inc-of-but-n-full %s' "${KEEP_NUM_FULL_CHAINS}"
+    printf ' --force'
+    printf '%s' "$( add_space "${OPTIONS_RMINCR}" )"
+    ;;
+esac
+
+echo " ${BACKUP_TARGET}"
diff --git a/libexec/kiwi-backup/scheduler b/libexec/kiwi-backup/scheduler
new file mode 100755
index 0000000..9226a14
--- /dev/null
+++ b/libexec/kiwi-backup/scheduler
@@ -0,0 +1,16 @@
+#!/bin/sh
+
+this_script="$( readlink -f "${0}" )"
+this_dir="${this_script%/*}"
+
+echo "${SCHEDULE_BACKUP}"  "$( "${this_dir}/build_command" backup )" \
+  | /usr/local/libexec/kiwi-cron/randomize_schedule
+
+echo "${SCHEDULE_CLEANUP}" "$( "${this_dir}/build_command" cleanup )" \
+  | /usr/local/libexec/kiwi-cron/randomize_schedule
+
+echo "${SCHEDULE_RMFULL}"  "$( "${this_dir}/build_command" rmfull )" \
+  | /usr/local/libexec/kiwi-cron/randomize_schedule
+
+echo "${SCHEDULE_RMINCR}"  "$( "${this_dir}/build_command" rmincr )" \
+  | /usr/local/libexec/kiwi-cron/randomize_schedule
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..3bb3b2b
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,38 @@
+# dependencies as per 
+# https://gitlab.com/duplicity/duplicity/-/blob/rel.0.8.21/requirements.txt
+
+##### basic requirements #####
+
+fasteners
+future
+python-gettext
+setuptools>=44.1.1
+setuptools-scm>=5.0.2
+
+
+##### backend libraries #####
+
+azure-storage-blob      ; python_version >= '3.6'
+b2sdk                   ; python_version >= '3.6'
+boto
+boto3
+boxsdk[jwt]             ; python_version >= '3.6'
+dropbox
+gdata                   ; python_version == '2.7'
+gdata-python3           ; python_version >= '3.6'
+google-api-python-client
+google-auth-oauthlib
+jottalib
+keyring
+mediafire
+megatools               ; python_version >= '3.6'
+paramiko
+pexpect
+psutil
+pydrive                 ; python_version >= '3.6'
+pydrive2                ; python_version >= '3.6'
+pyrax                   ; python_version >= '3.6'
+python-swiftclient
+python-keystoneclient
+requests
+requests-oauthlib