chore: update Dockerfile to use full image path and add Docker publish workflow

.github/workflows/docker-publish.yml

@@ -0,0 +1,56 @@
+name: Publish Docker Image
+
+on:
+  push:
+    tags:
+      - 'v*'
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    env:
+      IMAGE_NAME: ${{ vars.DOCKERHUB_IMAGE }}
+    steps:
+      - name: Validate Docker Hub image name
+        run: |
+          if [ -z "${IMAGE_NAME}" ]; then
+            echo "Repository variable DOCKERHUB_IMAGE must be set, for example yusufipk/openframe" >&2
+            exit 1
+          fi
+
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.IMAGE_NAME }}
+          tags: |
+            type=ref,event=tag
+            type=raw,value=latest,enable=${{ startsWith(github.ref, 'refs/tags/v') }}
+            type=sha,prefix=sha-
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

Dockerfile

@@ -1,4 +1,4 @@
-FROM oven/bun:1 AS base
+FROM docker.io/oven/bun:1 AS base
 WORKDIR /app
 
 FROM base AS deps
@@ -23,7 +23,7 @@ ENV NODE_ENV=production
 RUN bun run db:generate
 RUN bun run build
 
-FROM oven/bun:1 AS runner
+FROM docker.io/oven/bun:1 AS runner
 WORKDIR /app
 ENV NODE_ENV=production
 ENV PORT=3000