Scope documentation CI and isolate delivery job resources

.gitea/workflows/build-and-push.yml

@@ -21,7 +21,18 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Select relevant delivery work
+        id: delivery
+        env:
+          DELIVERY_EVENT: ${{ github.event_name }}
+          DELIVERY_REF: ${{ github.ref }}
+          DELIVERY_SHA: ${{ github.sha }}
+          DELIVERY_BASE: ${{ github.event.pull_request.base.sha || github.event.before }}
+        run: |
+          cd .
+          bash scripts/ci-select.sh
       - name: Install Go and Docker CLI if needed
+        if: ${{ steps.delivery.outputs.run == 'true' }}
         shell: bash
         run: |
           set -euo pipefail
@@ -62,9 +73,11 @@ jobs:
           docker version
 
       - name: Run tests
+        if: ${{ steps.delivery.outputs.run == 'true' }}
         run: go test ./...
 
       - name: Log in to Gitea Container Registry
+        if: ${{ steps.delivery.outputs.run == 'true' }}
         shell: bash
         run: |
           set -euo pipefail
@@ -79,6 +92,7 @@ jobs:
           exit 1
 
       - name: Determine image tags
+        if: ${{ steps.delivery.outputs.run == 'true' }}
         id: meta
         shell: bash
         env:
@@ -109,6 +123,7 @@ jobs:
           printf 'EOF\n' >> "$GITHUB_OUTPUT"
 
       - name: Build image
+        if: ${{ steps.delivery.outputs.run == 'true' }}
         shell: bash
         run: |
           set -euo pipefail
@@ -124,6 +139,7 @@ jobs:
           docker build "${build_args[@]}" .
 
       - name: Push image
+        if: ${{ steps.delivery.outputs.run == 'true' }}
         shell: bash
         run: |
           set -euo pipefail