build: use native Dockerfile for devstack

As we are moving away from ansibles so we are going to use native Dockerfile for
the registrar image to use in devstack.

.dockerignore

@@ -1,6 +1,8 @@
 # .dockerignore for registrar.
 # There's a lot here, please try to keep it organized.
 
+Dockerfile
+
 ### Files that are not needed in the docker file
 
 /test_root/

.github/workflows/push-docker-images.yml

@@ -0,0 +1,49 @@
+name: Build and Push Docker Images
+
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - open-release/**
+jobs:
+  push:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      # Use the release name as the image tag if we're building an open release branch.
+      # Examples: if we're building 'open-release/maple.master', tag the image as 'maple.master'.
+      # Otherwise, we must be building from a push to master, so use 'latest'.
+      - name: Get tag name
+        id: get-tag-name
+        uses: actions/github-script@v5
+        with:
+          script: |
+            const branchName = context.ref.split('/').slice(-1)[0];
+            const tagName = branchName === 'master' ? 'latest' : branchName;
+            console.log('Will use tag: ' + tagName);
+            return tagName;
+          result-encoding: string
+
+      - name: Build and push Dev Docker image
+        uses: docker/build-push-action@v1
+        with:
+          push: true
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+          target: dev
+          repository: edxops/registrar-dev
+          tags: ${{ steps.get-tag-name.outputs.result }},${{ github.sha }}
+
+      # - name: Build and push prod Docker image
+      #   uses: docker/build-push-action@v1
+      #   with:
+      #     push: true
+      #     username: ${{ secrets.DOCKERHUB_USERNAME }}
+      #     password: ${{ secrets.DOCKERHUB_PASSWORD }}
+      #     target: prod
+      #     repository: edxops/registrar
+      #     tags: ${{ steps.get-tag-name.outputs.result }},${{ github.sha }}

Dockerfile

@@ -1,18 +1,19 @@
 FROM ubuntu:focal as app
 
 # System requirements.
-RUN apt-get update && apt-get upgrade -qy
+RUN apt-get update
 RUN apt-get install -qy \
 	git-core \
 	language-pack-en \
+	build-essential \
 	python3.8 \
 	python3-pip \
+	python3-virtualenv \
 	python3.8-dev \
 	libmysqlclient-dev \
-	libssl-dev
-RUN pip3 install --upgrade pip setuptools
-# delete apt package lists because we do not need them inflating our image
-RUN rm -rf /var/lib/apt/lists/*
+	libssl-dev \
+	# delete apt package lists because we do not need them inflating our image
+	rm -rf /var/lib/apt/lists/*
 
 # Python is Python3.
 RUN ln -s /usr/bin/python3 /usr/bin/python
@@ -23,29 +24,56 @@ ENV LANG en_US.UTF-8
 ENV LANGUAGE en_US:en
 ENV LC_ALL en_US.UTF-8
 
+ARG COMMON_CFG_DIR="/edx/etc"
+ARG COMMON_APP_DIR="/edx/app"
+ARG REGISTRAR_APP_DIR="${COMMON_APP_DIR}/registrar"
+ARG REGISTRAR_VENV_DIR="${COMMON_APP_DIR}/registrar/venvs/registrar"
+ARG REGISTRAR_CODE_DIR="${REGISTRAR_APP_DIR}"
 
-ENV DJANGO_SETTINGS_MODULE registrar.settings.production
+ENV PATH="$REGISTRAR_VENV_DIR/bin:$PATH"
+ENV REGISTRAR_APP_DIR ${REGISTRAR_APP_DIR}
+
+COPY requirements ${INSIGHTS_CODE_DIR}/requirements
+
+# Working directory will be root of repo.
+WORKDIR ${REGISTRAR_CODE_DIR}
+
+RUN virtualenv -p python3.8 --always-copy ${REGISTRAR_VENV_DIR}
 
-RUN mkdir -p /edx/app/registrar
+# Copy just Python requirements & install them.
+COPY requirements ${REGISTRAR_CODE_DIR}/requirements
+COPY Makefile ${REGISTRAR_CODE_DIR}
+
+ENV REGISTRAR_CFG="${COMMON_CFG_DIR}/registrar.yml"
 
 # Expose ports.
 EXPOSE 18734
 EXPOSE 18735
 
-RUN useradd -m --shell /bin/false app
+FROM app as dev
 
-# Working directory will be root of repo.
-WORKDIR /edx/app/registrar
+RUN pip install --no-cache-dir -r requirements/devstack.txt
 
-# Copy just Python requirements & install them.
-COPY requirements/ /edx/app/registrar/requirements/
-COPY Makefile /edx/app/registrar/
-RUN make production-requirements
+# After the requirements so changes to the code will not bust the image cache
+COPY . ${REGISTRAR_CODE_DIR}/
 
-USER app
+ENV DJANGO_SETTINGS_MODULE registrar.settings.devstack
+
+# Backwards compatibility with devstack
+RUN touch "${REGISTRAR_APP_DIR}/registrar_env"
+
+CMD while true; do python ./manage.py runserver 0.0.0.0:18734; sleep 2; done
+
+FROM app as prod
+
+RUN pip install  --no-cache-dir -r ${INSIGHTS_CODE_DIR}/requirements/production.txt
+
+# After the requirements so changes to the code will not bust the image cache
+COPY . ${REGISTRAR_CODE_DIR}/
+
+ENV DJANGO_SETTINGS_MODULE registrar.settings.production
 
 # Gunicorn 19 does not log to stdout or stderr by default. Once we are past gunicorn 19, the logging to STDOUT need not be specified.
 CMD ["gunicorn", "--workers=2", "--name", "registrar", "-c", "/edx/app/registrar/registrar/docker_gunicorn_configuration.py", "--log-file", "-", "--max-requests=1000", "registrar.wsgi:application"]
 
-# After the requirements so changes to the code will not bust the image cache
-COPY . /edx/app/registrar
+