diff --git a/Dockerfile b/Dockerfile
index 40d7e0d..483a8e2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,18 +3,22 @@ FROM python:3.11-alpine
 ENV \
     PYTHONUNBUFFERED=1
 
+# copy app source
 COPY . /usr/src/app
 
 RUN set -ex; \
-    # buildtime deps
+    # install buildtime deps
     apk add --no-cache \
         --virtual .build-deps \
         build-base \
         gcc \
         linux-headers \
+    ; \
+    # install app
+    pip3 --no-cache-dir install /usr/src/app; \
+    # remove buildtime deps
+    apk del --no-cache \
+        .build-deps \
     ;
 
-RUN set -ex; \
-    pip3 --no-cache-dir install /usr/src/app
-
 ENTRYPOINT ["kiwi-simple-metrics"]
\ No newline at end of file