Merge pull request #5 from ogrodnek/optimize_docker

use docker build stage

Dockerfile

@@ -1,18 +1,22 @@
-FROM python:3.9-alpine
-
-# TODO don't need gcc on the final image, but need it for poetry install
-RUN apk add build-base libffi-dev
-
+# --- Build Stage ---
+FROM python:3.9-alpine AS builder
 
+RUN apk add --no-cache build-base libffi-dev
 ENV PYTHONUNBUFFERED 1
-
 WORKDIR /app
-
-RUN pip3 install poetry
-
+RUN pip3 install --no-cache-dir poetry
 COPY . .
 
 WORKDIR /app/examples
 RUN poetry install --no-root --only main
 
+# --- Runtime Stage ---
+FROM python:3.9-alpine
+
+COPY --from=builder /usr/local/lib/python3.9/site-packages /usr/local/lib/python3.9/site-packages
+COPY --from=builder /usr/local/bin /usr/local/bin
+COPY --from=builder /app /app
+
+
+WORKDIR /app/examples
 CMD [ "poetry", "run", "uvicorn", "--host",  "0.0.0.0", "examples.app:app" ]