ci: build and push image

.gitea/workflows/build.yml

@@ -0,0 +1,22 @@
+name: build
+on:
+  push:
+    branches: [main, staging]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: docker/login-action@v3
+        with:
+          registry: git.stanrunge.dev
+          username: ${{ github.actor }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
+
+      - uses: docker/build-push-action@v5
+        with:
+          context: ./packages/web
+          push: true
+          tags: git.stanrunge.dev/stan/personal-website:${{ github.sha }}