Incorporates the base image building back into the main repo with multi stage building

.github/workflows/reusable-ci-backend.yml

@@ -0,0 +1,108 @@
+name: Backend CI Jobs
+
+on:
+  workflow_call:
+
+jobs:
+
+  code-checks-backend:
+    name: "Code Style Checks"
+    runs-on: ubuntu-20.04
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v3
+      -
+        name: Install checkers
+        run: |
+          pipx install reorder-python-imports
+          pipx install yesqa
+          pipx install add-trailing-comma
+          pipx install flake8
+      -
+        name: Run reorder-python-imports
+        run: |
+          find src/ -type f -name '*.py' ! -path "*/migrations/*" | xargs reorder-python-imports
+      -
+        name: Run yesqa
+        run: |
+          find src/ -type f -name '*.py' ! -path "*/migrations/*" | xargs yesqa
+      -
+        name: Run add-trailing-comma
+        run: |
+          find src/ -type f -name '*.py' ! -path "*/migrations/*" | xargs add-trailing-comma
+      # black is placed after add-trailing-comma because it may format differently
+      # if a trailing comma is added
+      -
+        name: Run black
+        uses: psf/black@stable
+        with:
+          options: "--check --diff"
+          version: "22.3.0"
+      -
+        name: Run flake8 checks
+        run: |
+          cd src/
+          flake8 --max-line-length=88 --ignore=E203,W503
+
+  tests-backend:
+    name: "Tests (${{ matrix.python-version }})"
+    runs-on: ubuntu-20.04
+    needs:
+      - code-checks-backend
+    strategy:
+      matrix:
+        python-version: ['3.8', '3.9', '3.10']
+      fail-fast: false
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 2
+      -
+        name: Install pipenv
+        run: pipx install pipenv
+      -
+        name: Set up Python
+        uses: actions/setup-python@v3
+        with:
+          python-version: "${{ matrix.python-version }}"
+          cache: "pipenv"
+          cache-dependency-path: 'Pipfile.lock'
+      -
+        name: Install system dependencies
+        run: |
+          sudo apt-get update -qq
+          sudo apt-get install -qq --no-install-recommends unpaper tesseract-ocr imagemagick ghostscript optipng libzbar0 poppler-utils
+      -
+        name: Install Python dependencies
+        run: |
+          pipenv sync --dev
+      -
+        name: Tests
+        run: |
+          cd src/
+          pipenv run pytest
+      -
+        name: Get changed files
+        id: changed-files-specific
+        uses: tj-actions/changed-files@v18.1
+        with:
+          files: |
+            src/**
+      -
+        name: List all changed files
+        run: |
+          for file in ${{ steps.changed-files-specific.outputs.all_changed_files }}; do
+            echo "${file} was changed"
+          done
+      -
+        name: Publish coverage results
+        if: matrix.python-version == '3.9' && steps.changed-files-specific.outputs.any_changed == 'true'
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        # https://github.com/coveralls-clients/coveralls-python/issues/251
+        run: |
+          cd src/
+          pipenv run coveralls --service=github