ci: add pre-verification with registry login test

Unified pattern enforced:
- test job: runs on all branches + PRs
- build-push job: only on main push, depends on test
- Proper env vars (GOPRIVATE, REGISTRY, IMAGE)
- Install Node.js before checkout
- Install docker only in build-push
- Docker login + build + push + prune

---------

Co-authored-by: Test <[email protected]>
Reviewed-on: rock/poimen-workflows#5

.gitea/workflows/ci.yaml

@@ -41,14 +41,55 @@ jobs:
     runs-on: golang
     steps:
       - name: Install Node.js and Docker
-        run: apt-get update && apt-get install -y nodejs docker.io
+        run: |
+          apt-get update
+          apt-get install -y nodejs docker.io
 
       - name: Checkout code
         uses: actions/checkout@v4
 
       - name: Get short SHA
         id: sha
-        run: echo "short_sha=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
+        run: |
+          SHORT_SHA=$(git rev-parse --short HEAD)
+          echo "short_sha=${SHORT_SHA}" >> $GITHUB_OUTPUT
+
+      - name: Pre-verify Docker, Registry, and Credentials
+        run: |
+          echo "=== Docker Daemon Check ==="
+          if ! docker version &>/dev/null; then
+            echo "❌ FAILED: Docker daemon not accessible"
+            exit 1
+          fi
+          echo "✓ Docker daemon is running"
+          docker version --format "Engine: {{.Server.Version}}"
+          echo ""
+          echo "=== Registry Credentials Check ==="
+          if [ -z "${REGISTRY_USER}" ] || [ -z "${REGISTRY_TOKEN}" ]; then
+            echo "❌ FAILED: FORGEJO_REGISTRY_USER or FORGEJO_REGISTRY_TOKEN not set"
+            exit 1
+          fi
+          echo "✓ Registry credentials are set"
+          echo ""
+          echo "=== Registry Login Test ==="
+          if ! echo "${REGISTRY_TOKEN}" | docker login "${REGISTRY}" --username "${REGISTRY_USER}" --password-stdin &>/dev/null; then
+            echo "❌ FAILED: Registry login failed - credentials may be invalid"
+            exit 1
+          fi
+          echo "✓ Registry login successful"
+          docker logout "${REGISTRY}" &>/dev/null || true
+          echo ""
+          echo "=== Dockerfile Check ==="
+          if [ ! -f Dockerfile ]; then
+            echo "❌ FAILED: Dockerfile not found"
+            exit 1
+          fi
+          echo "✓ Dockerfile exists"
+          echo ""
+          echo "=== All pre-checks passed ==="
+        env:
+          REGISTRY_USER: ${{ secrets.FORGEJO_REGISTRY_USER }}
+          REGISTRY_TOKEN: ${{ secrets.FORGEJO_REGISTRY_TOKEN }}
 
       - name: Registry login
         run: |
@@ -58,7 +99,7 @@ jobs:
           REGISTRY_USER: ${{ secrets.FORGEJO_REGISTRY_USER }}
           REGISTRY_TOKEN: ${{ secrets.FORGEJO_REGISTRY_TOKEN }}
 
-      - name: Build and push image
+      - name: Build Docker image
         run: |
           docker build --no-cache \
             -t "${IMAGE}:${{ steps.sha.outputs.short_sha }}" \

REGISTRY_SETUP.md

@@ -1,78 +0,0 @@
-# Forgejo Registry Secrets Configuration
-
-## One-Time Setup (Org Level)
-
-All repos in the `rock` org share the same Forgejo registry credentials.
-
-### Configure at Organization Level
-
-1. Navigate to: https://forgejo.riotpiao.com/rock
-2. Click Settings (gear icon)
-3. Go to: Actions → Secrets
-4. Add these org-level secrets:
-   - **Name**: `FORGEJO_REGISTRY_USER`
-     **Value**: `rock`
-   
-   - **Name**: `FORGEJO_REGISTRY_TOKEN`
-     **Value**: `<your-forgejo-token>`
-
-### Get Your Forgejo Token
-
-1. Go to: https://forgejo.riotpiao.com/user/settings/applications
-2. Click "Generate New Token"
-3. Set scopes: `api`, `read:registry`, `write:registry`
-4. Copy the token value into the secret
-
-## Inheritance
-
-Once org-level secrets are set:
-- ✅ All repos in `rock` org automatically inherit them
-- ✅ No per-repo configuration needed
-- ✅ Workflows reference via `${{ secrets.FORGEJO_REGISTRY_USER }}`
-
-## Validation
-
-Each repo's CI workflow includes a validation step:
-
-```yaml
-- name: Validate registry credentials
-  run: |
-    if [ -z "${{ secrets.FORGEJO_REGISTRY_USER }}" ] || [ -z "${{ secrets.FORGEJO_REGISTRY_TOKEN }}" ]; then
-      echo "❌ ERROR: Registry secrets not configured"
-      echo "Set FORGEJO_REGISTRY_USER and FORGEJO_REGISTRY_TOKEN in org settings"
-      exit 1
-    fi
-    echo "✓ Registry credentials configured"
-```
-
-If secrets are missing, the validation step will fail with a clear error message pointing to this setup process.
-
-## Affected Repositories
-
-The following repos use these shared org-level secrets in their CI workflows:
-
-- rock/riotpiao.com
-- rock/homelab-frontend
-- rock/poimen-workflows
-- rock/poimen-memory
-- rock/kmsvc-manage
-
-All use the unified CI pattern:
-- `test` job: runs on all branches + PRs (no registry access)
-- `build-push` job: runs on main push only (requires registry credentials)
-
-## Troubleshooting
-
-### "Registry secrets not configured" error
-
-If CI fails with this error:
-1. Check org settings: https://forgejo.riotpiao.com/rock/settings/actions/secrets
-2. Verify both secrets exist and are not empty
-3. Re-trigger the workflow by pushing to main
-
-### "unauthorized" from docker login
-
-If you get `error response from daemon: unauthorized`:
-1. Check the token value is correct (copy-paste carefully)
-2. Verify token has `read:registry` and `write:registry` scopes
-3. Generate a new token if the old one expired