Add some docker stuff for testing PRs

Author: rubinlinux

.github/workflows/docker-pr-build.yml

@@ -0,0 +1,59 @@
+name: Build PR Docker Image
+
+on:
+  workflow_dispatch:
+    inputs:
+      pr_number:
+        description: 'Pull request number to build'
+        required: true
+        type: number
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      pull-requests: read
+
+    steps:
+      - name: Checkout PR
+        uses: actions/checkout@v4
+        with:
+          ref: refs/pull/${{ inputs.pr_number }}/merge
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:pr-${{ inputs.pr_number }}
+          labels: |
+            org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}/pull/${{ inputs.pr_number }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Build and push Linesync Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: ./tools/linesync
+          push: true
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}-linesync:pr-${{ inputs.pr_number }}
+          labels: |
+            org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}/pull/${{ inputs.pr_number }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

.gitignore

@@ -20,3 +20,4 @@ tools/sidconvert/num2sid
 # iauthd-ts build artifacts
 tools/iauthd-ts/dist/
 tools/iauthd-ts/node_modules/
+build/