Create dockerfile and workflow to build docker image in ci

.github/workflows/docker.yaml

@@ -0,0 +1,43 @@
+name: build-docker-image
+
+on:
+  push:
+    branches:
+      - 'main'
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Login to Github
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            # set latest tag for master branch
+            type=raw,value=latest,enable={{is_default_branch}}
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

@@ -1,4 +1,4 @@
-FROM rust:1.81-bookworm
+FROM rust:1.81-bookworm AS builder
 
 RUN rustup default nightly
 RUN rustup target add wasm32-unknown-unknown
@@ -21,10 +21,23 @@ RUN ssh-keyscan -t rsa github.com >> ~/.ssh/known_hosts
 
 RUN trunk build --release --locked -v
 
-WORKDIR /usr/src/knifer/backend
-RUN cargo build --release
+WORKDIR /usr/src/knifer/
 
-EXPOSE 8000
+ENV FRONTEND_DIST_DIR=/root/knifer/static
+RUN cargo build --release -p backend
 
-WORKDIR /usr/src/knifer
-CMD ["./target/release/backend"]
+FROM debian:bookworm
+
+#
+RUN apt update
+Run apt install libssl3 ca-certificates -y
+
+WORKDIR /root/knifer
+
+COPY --from=builder /usr/src/knifer/frontend/dist/ /root/knifer/static
+COPY --from=builder /usr/src/knifer/target/release/backend /root/knifer/backend
+
+EXPOSE 3000
+
+WORKDIR /root/knifer
+ENTRYPOINT ["/root/knifer/backend"]