fix: assigng correct tags to dev builds

.github/workflows/ci.yml

@@ -53,3 +53,84 @@ jobs:
 
       - name: Run code checks
         run: docker compose exec -T phx mix check --no-fix --no-retry
+
+  docker-pr:
+    name: Build PR Image
+    runs-on: ubuntu-latest
+    needs: test
+    # Fork PRs can't write to GHCR, so skip them to avoid auth failures
+    if: |
+      github.event_name == 'pull_request' &&
+      !startsWith(github.head_ref, 'release-please') &&
+      github.event.pull_request.head.repo.full_name == github.repository
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Get short SHA
+        id: sha
+        run: echo "value=${GITHUB_SHA:0:7}" >> $GITHUB_OUTPUT
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./docker/selfhosted.Dockerfile
+          platforms: linux/amd64
+          push: true
+          tags: ghcr.io/${{ github.repository }}:pr-${{ github.event.pull_request.number }}-${{ steps.sha.outputs.value }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+  docker-rc:
+    name: Build RC Image
+    runs-on: ubuntu-latest
+    needs: test
+    if: |
+      github.event_name == 'pull_request' &&
+      startsWith(github.head_ref, 'release-please') &&
+      github.event.pull_request.head.repo.full_name == github.repository
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Get version from version.txt
+        id: version
+        run: echo "value=$(cat version.txt)" >> $GITHUB_OUTPUT
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./docker/selfhosted.Dockerfile
+          platforms: linux/amd64
+          push: true
+          tags: ghcr.io/${{ github.repository }}:rc-${{ steps.version.outputs.value }}-${{ github.run_number }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max