Deploy Dokploy applications from GitHub and Gitea Actions

A dependency-free node20 action that triggers application.deploy or
compose.deploy, then follows the deployment to a terminal status so a
failed build fails the CI run. Snapshots the deployment list before
triggering, so a concurrent deployment is never mistaken for this one.

Optionally points the application at a freshly built image first, which
is what lets a workflow lint, test, push and deploy the same artifact.

.github/workflows/release.yml

@@ -0,0 +1,33 @@
+name: release
+
+on:
+  push:
+    tags: ["v*.*.*"]
+
+permissions:
+  contents: write
+
+jobs:
+  # Workflows pin `@v1`, so the major tag has to follow each release.
+  major-tag:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+
+      - name: Test before moving the tag
+        run: node --test
+
+      - name: Move the major version tag
+        run: |
+          major="${GITHUB_REF_NAME%%.*}"
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git tag -f "$major" "$GITHUB_REF_NAME"
+          git push origin "refs/tags/$major" --force
+          echo "Moved $major to $GITHUB_REF_NAME"