Merge pull request #127 from adamantike/fix/copy-dependencies-from-stage

Reduce Docker image size by only copying pip installed dependencies

Dockerfile

@@ -6,12 +6,13 @@ FROM python:alpine AS base
 FROM base AS dependencies
 # install dependencies
 COPY requirements.txt .
-RUN pip install -r requirements.txt
- 
+RUN pip install --user -r requirements.txt
+
 #
 # ---- Release ----
-FROM dependencies AS release
-# copy project source file(s)
+FROM base AS release
+# copy installed dependencies and project source file(s)
 WORKDIR /
+COPY --from=dependencies /root/.local /root/.local
 COPY cloudflare-ddns.py .
-CMD ["python", "-u", "/cloudflare-ddns.py", "--repeat"]
+CMD ["python", "-u", "/cloudflare-ddns.py", "--repeat"]