Add builder stage to Dockerfile

Fixes #174

Dockerfile

@@ -1,14 +1,24 @@
+# Build stage
+FROM python:3-alpine AS builder
+
+RUN set -ex && \
+  apk add \
+  build-base \
+  libffi-dev \
+  libxml2-dev \
+  openssl-dev
+
+COPY . /app-source-dir
+
+RUN pip install --target=/app/python-packages ./app-source-dir 
+
+
+# Runtime stage
 FROM python:3-alpine
-COPY . /
-RUN set -ex \
-  && apk add --no-cache --virtual .build-deps \
-    build-base \
-    libffi-dev \
-    libxml2-dev \
-    openssl-dev \
-  && apk add --no-cache --virtual .run-deps \
-    libxslt-dev \
-  && pip install -r requirements.txt \
-  && apk del .build-deps
-
-ENTRYPOINT ["python", "-m", "awscurl.awscurl"]
+
+COPY --from=builder /app /app
+
+ENV PATH=/app/python-packages/bin:${PATH}
+ENV PYTHONPATH=/app/python-packages
+
+ENTRYPOINT ["awscurl"]

Makefile

@@ -7,3 +7,9 @@ venv:
 		pip install --upgrade setuptools; \
 		pip install -r requirements.txt -r requirements-test.txt; \
 	)
+
+docker-build:
+	docker build -t awscurl .
+
+docker-run:
+	docker run -it --rm awscurl

README.md

@@ -77,7 +77,7 @@ docker pull ghcr.io/okigan/awscurl
 * Call S3: List bucket content
 
   ```sh
-  $ awscurl --service s3 https://awscurl-sample-bucket.s3.amazonaws.com | tidy -xml -iq
+  $ awscurl --service s3 'https://awscurl-sample-bucket.s3.amazonaws.com' | tidy -xml -iq
   <?xml version="1.0" encoding="utf-8"?>
   <ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
     <Name>awscurl-sample-bucket</Name>