Enable auto-docker build & publish

.gitea/workflows/build-push.yaml

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+name: Build and Push container image
+run-name: ${{ gitea.actor }} is building and pushing
+
+on:
+  create:
+    tags: "*"
+
+env:
+  GITEA_DOMAIN: git.fjla.uk
+  GITEA_REGISTRY_USER: owlbot
+  RESULT_IMAGE_NAME: owlboard/web-pwa
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    container:
+      image: catthehacker/ubuntu:act-latest
+      options: --privileged
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Login to Gitea Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.GITEA_DOMAIN }}
+          username: ${{ env.GITEA_REGISTRY_USER }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
+      - name: Build and Push image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: |
+            ${{ env.GITEA_DOMAIN }}/${{ env.RESULT_IMAGE_NAME }}:${{ gitea.ref_name }}
+            ${{ env.GITEA_DOMAIN }}/${{ env.RESULT_IMAGE_NAME }}:latest

Dockerfile

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+FROM node:22-alpine AS builder
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci
+COPY . .
+RUN npm run build
+
+FROM alpine:3.20
+WORKDIR /web-content
+
+LABEL org.opencontainers.image.description="SvelteKit Static build - Designed to be an InitContainer to copy files from to the output web server container's filesystem"
+
+COPY --from=builder /app/build ./
+CMD ["sh", "-c", "cp -R /web-content/* /target-dir/"]