diff --git a/.dockerignore b/.dockerignore
index 712e87b..5460a86 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,8 +1,17 @@
+# node stuff
 node_modules
 npm-debug.log
+
+# big files
 **/*.xcf
 **/*.bundle.js
 
+# docker stuff
 Dockerfile
 .dockerignore
 docker-compose.yml
+
+# container volumes
+src
+views
+public_html
diff --git a/docker-compose.yml b/docker-compose.yml
index ce4ec78..b729c33 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -9,6 +9,6 @@ services:
       - "${PWD}/src:/app/src"
       - "${PWD}/views:/app/views:ro"
       - "${PWD}/public_html:/app/public_html"
-      - "${PWD}/fftcg.db:/app/fftcg.db"
+      # - "${PWD}/fftcg.db:/app/fftcg.db"
     ports:
       - "3000:3000"
diff --git a/fftcg.db b/fftcg.db
index 52522d0..b56f6e8 100644
Binary files a/fftcg.db and b/fftcg.db differ
diff --git a/inc/fftcgdb.coffee b/inc/fftcgdb.coffee
index 6b1f8fb..76b6422 100644
--- a/inc/fftcgdb.coffee
+++ b/inc/fftcgdb.coffee
@@ -2,38 +2,53 @@
 bcrypt = (require 'bcrypt')
 sqlite3 = (require 'sqlite3').verbose()
 
-FFTCGDB =
-  open: (filename) ->
-    @filename = filename
+FFTCGDB = (filename) ->
+  @filename = filename
 
-    @db = new sqlite3.Database @filename, (err) ->
-      if err
-        console.error err.message
-      console.log 'Connected to', @filename
+  @db = new sqlite3.Database @filename, (err) ->
+    if err
+      console.error err.message
 
-    @db.run """
-      CREATE TABLE IF NOT EXISTS users (
-        nick text NOT NULL,
-        pwd text NOT NULL,
-        socket text
-      );
-    """
+  @db.run """
+    CREATE TABLE IF NOT EXISTS users (
+      login text NOT NULL,
+      nickname text,
+      pwd text NOT NULL,
+      socket text,
+      UNIQUE(login)
+    );
+  """
+  console.log 'Connected to', @filename
+  return
 
-  close: ->
-    db.close (err) ->
-      if err
-        console.error err.message
-      console.log 'Closed', @filename
+FFTCGDB::close = ->
+  @db.close (err) ->
+    if err
+      console.error err.message
+    console.log 'Closed', @filename
 
-  adduser: (name, password) ->
-    saltRounds = 13
-    that = @
+FFTCGDB::register = (login, password) ->
+  that = @
+  # bruteforce countermeasure
+  saltRounds = 13
 
+  new Promise (resolve, reject) ->
+    # validate username
+    login = login.toLowerCase()
+    # hash password
     bcrypt.hash password, saltRounds, (err, hash) ->
-      that.db.run "INSERT INTO users (nick, pwd) VALUES ('#{name}', '#{hash}');", (err, result) ->
-        if err
-          console.error err.message
-        console.log 'Result:', result
+      reject 'bcrypt fail' if err
+      # try creating row in users table
+      that.db.run "INSERT INTO users (login, pwd) VALUES ('#{login}', '#{hash}');", (err, result) ->
+        reject 'sqlite fail' if err
+        # registration successful
+        resolve login
+
+FFTCGDB::login = (login, password) ->
+  that = @
+
+  new Promise (resolve, reject) ->
+
 
 module.exports = FFTCGDB
 
diff --git a/server.coffee b/server.coffee
index c47aa47..dc3765d 100644
--- a/server.coffee
+++ b/server.coffee
@@ -6,8 +6,9 @@ path = (require 'path')
 socketio = (require 'socket.io')
 
 # my libraries
-fftcgdb = (require './inc/fftcgdb')
-fftcgdb.open path.resolve(__dirname, 'fftcg.db')
+FFTCGDB = (require './inc/fftcgdb')
+
+fftcgdb = new FFTCGDB path.resolve(__dirname, 'fftcg.db')
 
 # express + socket.io framework
 app = express()
@@ -33,9 +34,21 @@ io.on 'connection', (socket) ->
     console.log 'a user disconnected'
     return
 
+  socket.on 'register', (login, password) ->
+    console.log 'message:', login, password
+    fftcgdb.register login, password
+      .then (login) ->
+        console.log 'registered "%s"', login
+      .catch (err) ->
+        console.error 'error: "%s"', err
+
   socket.on 'login', (uname, password) ->
     console.log 'message:', uname, password
-    fftcgdb.adduser uname, password
+    fftcgdb.login uname, password
+      .then (login) ->
+        console.log 'Login OK "%s"', login
+      .catch (err) ->
+        console.error 'error: "%s"', err
 
 # Create server
 web.listen 3000, ->
diff --git a/views/index.pug b/views/index.pug
index be30e71..bee41f7 100644
--- a/views/index.pug
+++ b/views/index.pug
@@ -12,7 +12,7 @@ html
         h1 Hello World!
         h2 App under development, please don't send valuable data!
       
-    div.container
+    div.container.bg-light
       div.row
         
         div.col-md-6