From ee1a41bd479b61eb479d289ccbc1efd1bd1a24f7 Mon Sep 17 00:00:00 2001
From: Andrew Hosgood <andrew.hosgood@nationalarchives.gov.uk>
Date: Tue, 2 Jan 2024 16:09:40 +0000
Subject: [PATCH] Add Docker build GitHub Actions

---
 .github/actions/docker-build/action.yml    | 44 ++++++++++++++++++++++
 .github/actions/get-version-tag/action.yml | 21 +++++++++++
 .github/workflows/cd.yml                   | 29 ++++++++++++++
 3 files changed, 94 insertions(+)
 create mode 100644 .github/actions/docker-build/action.yml
 create mode 100644 .github/actions/get-version-tag/action.yml
 create mode 100644 .github/workflows/cd.yml

diff --git a/.github/actions/docker-build/action.yml b/.github/actions/docker-build/action.yml
new file mode 100644
index 0000000..b42b17d
--- /dev/null
+++ b/.github/actions/docker-build/action.yml
@@ -0,0 +1,44 @@
+name: Build Docker image
+
+inputs:
+  version:
+    required: true
+    type: string
+  latest:
+    required: false
+    type: boolean
+    default: false
+  github-token:
+    required: true
+    type: string
+  docker-image-name:
+    required: true
+    type: string
+
+runs:
+  using: "composite"
+  steps:
+    - uses: actions/checkout@v3
+    - name: Log in to registry
+      run: echo "${{ inputs.github-token }}" | docker login ghcr.io -u $ --password-stdin
+      shell: bash
+    - uses: hadolint/hadolint-action@v3.1.0
+      with:
+        dockerfile: Dockerfile
+        ignore: DL3045,DL3007
+    - name: Build and push image
+      run: |
+        IMAGE_ID=$(echo "ghcr.io/${{ github.repository_owner }}/${{ inputs.docker-image-name }}" | tr '[A-Z]' '[a-z]')
+        echo "IMAGE_ID=$IMAGE_ID" >> "$GITHUB_OUTPUT"
+        echo $IMAGE_ID
+        docker build --tag $IMAGE_ID:${{ inputs.version }} --platform=linux/amd64 --no-cache .
+        docker push $IMAGE_ID:${{ inputs.version }}
+      shell: bash
+    - name: Tag latest
+      if: inputs.latest
+      run: |
+        IMAGE_ID=$(echo "ghcr.io/${{ github.repository_owner }}/${{ inputs.docker-image-name }}" | tr '[A-Z]' '[a-z]')
+        echo $IMAGE_ID
+        docker tag $IMAGE_ID:${{ inputs.version }} $IMAGE_ID:latest
+        docker push $IMAGE_ID:latest
+      shell: bash
\ No newline at end of file
diff --git a/.github/actions/get-version-tag/action.yml b/.github/actions/get-version-tag/action.yml
new file mode 100644
index 0000000..acddf7b
--- /dev/null
+++ b/.github/actions/get-version-tag/action.yml
@@ -0,0 +1,21 @@
+name: Get version tag
+
+outputs:
+  version-tag:
+    description: "Version tag"
+    value: ${{ steps.version-tag.outputs.VERSION }}
+
+runs:
+  using: "composite"
+  steps:
+    - id: version-tag
+      name: Get tag from branch, tag or release
+      run: |
+        VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
+        # Strip "v" prefix from tag name
+        [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')
+        [ "$VERSION" == "main" ] && VERSION=develop
+        [ "$VERSION" == "develop" ] && VERSION=develop
+        echo "Version: $VERSION"
+        echo "VERSION=$VERSION" >> "$GITHUB_OUTPUT"
+      shell: bash
\ No newline at end of file
diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
new file mode 100644
index 0000000..27c4e59
--- /dev/null
+++ b/.github/workflows/cd.yml
@@ -0,0 +1,29 @@
+name: CD
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - proof-of-concept
+
+concurrency:
+  group: cd
+  
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+      contents: read
+    steps:
+      - uses: actions/checkout@v3
+      - name: Get tag
+        id: version-tag
+        uses: ./.github/actions/get-version-tag
+      - name: Build Docker image
+        uses: ./.github/actions/docker-build
+        with:
+          version: ${{ steps.version-tag.outputs.version-tag }}
+          latest: true
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          docker-image-name: ${{ vars.DOCKER_IMAGE_NAME }}