Docker local development setup

docker/dev/Dockerfile

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+# use latest python alphine image.
+FROM python:rc-alpine3.12
+
+# install system dependencies.
+RUN apk update && apk add --no-cache \
+  gcc libc-dev g++ graphviz git bash go imagemagick inkscape
+
+# install go package.
+RUN go get github.com/mingrammer/round
+
+# add go bin to path.
+ENV PATH "$PATH:/root/go/bin"
+
+# project directory.
+WORKDIR /usr/src/diagrams
+
+# Copy the rest of your app's source code from your host to your image filesystem.
+COPY . .
+
+# install python requirements.
+RUN pip install -r ./docker/dev/requirements.txt

docker/dev/requirements.txt

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+diagrams
+black

docker/dev/setup.txt

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+Docker local development setup.
+
+1. Go to diagrams project directory.
+
+2. Build the docker image: 
+docker build --tag diagrams:1.0 -f ./docker/dev/Dockerfile .
+
+3. Run the container in background and mount the project source: 
+docker run -d \
+-it \
+--name diagrams \
+--mount type=bind,source="$(pwd)",target=/usr/src/diagrams \
+diagrams:1.0
+
+4. Run unit tests in the host using the container: 
+docker exec diagrams python -m unittest tests/*.py -v
+
+5. Run autogen.sh: 
+docker exec diagrams ./autogen.sh