diff --git a/.github/workflows/binary.yaml b/.github/workflows/binary.yaml
deleted file mode 100644
index 29c227d..0000000
--- a/.github/workflows/binary.yaml
+++ /dev/null
@@ -1,44 +0,0 @@
-name: Build binary
-
-on:
-  push:
-    branches:
-    - '*'
-
-jobs:
-  build-binary:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-      - name: Cache
-        uses: actions/cache@v3
-        with:
-          path: |
-            ~/.cargo/bin/
-            ~/.cargo/registry/index/
-            ~/.cargo/registry/cache/
-            ~/.cargo/git/db/
-            target/
-          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
-
-      - name: Install latest rust toolchain
-        uses: actions-rs/toolchain@v1
-        with:
-          toolchain: stable
-          default: true
-          override: true
-
-      - name: Build
-        run: |
-          cargo build --bins --release
-          strip target/release/lambda
-          strip target/release/standalone
-
-      - name: Artifact
-        uses: actions/upload-artifact@v3
-        with:
-          name: release
-          path: |
-            target/release/lambda
-            target/release/standalone
diff --git a/.github/workflows/build_nix.yml b/.github/workflows/build_nix.yml
index 04873d3..feda424 100644
--- a/.github/workflows/build_nix.yml
+++ b/.github/workflows/build_nix.yml
@@ -10,6 +10,20 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Building package
-      run: nix build -v -L
-    - name: Build docker
-      run: nix bundle --bundler 'github:NixOS/bundlers#toDockerImage' .
+      run: nix build '.#main'
+    - name: Build docker image
+      run: |
+        nix build '.#docker'
+        ls -lah $(readlink ./result)
+        docker load -i ./result
+    - name: Login to Container registry
+      uses: docker/login-action@v3
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+    - name: Retag and push
+      if: github.repository == 'nextdotid/relation_server'
+      run: |
+        docker tag nextdotid/relation_server:latest ghcr.io/${{ github.repository }}:${{ github.ref_name }}
+        docker push ghcr.io/${{ github.repository }}:${{ github.ref_name }}
diff --git a/.github/workflows/container.yaml b/.github/workflows/container.yaml
deleted file mode 100644
index 22873a9..0000000
--- a/.github/workflows/container.yaml
+++ /dev/null
@@ -1,52 +0,0 @@
-name: Build container
-
-on:
-  push:
-    branches:
-    - main
-    - develop
-    # DEBUG
-    - graphdb/tigergraph
-
-jobs:
-  build-image:
-    if: (github.ref_name == 'main' || github.ref_name == 'develop' || github.ref_name == 'graphdb/tigergraph') && github.repository == 'nextdotid/relation_server'
-    runs-on: ubuntu-latest
-    env:
-      REGISTRY: ghcr.io
-      IMAGE_NAME: ${{ github.repository }}
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v3
-    - name: Log in to Container registry
-      uses: docker/login-action@v2
-      with:
-        registry: ${{ env.REGISTRY }}
-        username: ${{ github.actor }}
-        password: ${{ secrets.GITHUB_TOKEN }}
-    - name: Setup Docker BuildX
-      uses: docker/setup-buildx-action@v2
-    - name: Cache Docker layers
-      uses: actions/cache@v3
-      with:
-        path: /tmp/.buildx-cache
-        key: ${{ runner.os }}-docker-build-${{ hashFiles('**/Cargo.lock') }}
-    - name: Extract metadata
-      id: meta
-      uses: docker/metadata-action@v4
-      with:
-        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
-    - name: Build and push
-      uses: docker/build-push-action@v3
-      with:
-        context: '.'
-        push: true
-        file: Dockerfile
-        tags: ${{ steps.meta.outputs.tags }}
-        labels: ${{ steps.meta.outputs.labels }}
-        cache-from: type=local,src=/tmp/.buildx-cache
-        cache-to: type=local,dest=/tmp/.buildx-cache-new,mode=max
-    - name: Move cache
-      run: |
-        rm -rf /tmp/.buildx-cache
-        mv /tmp/.buildx-cache-new /tmp/.buildx-cache
diff --git a/docker-compose.yaml b/docker-compose.yaml
index 3fae3ba..459c7ba 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -1,6 +1,11 @@
 # For developemnt use only.
-version: "3.8"
 services:
+  relation:
+    image: nextdotid/relation_server:latest
+    ports:
+      - 127.0.0.1:8000:8000
+    volumes:
+    - ./config:/app/config:ro
   tigergraph:
     image: tigergraph/tigergraph:3.9.1
     ports:
diff --git a/flake.nix b/flake.nix
index 6c5105a..95449ca 100644
--- a/flake.nix
+++ b/flake.nix
@@ -10,16 +10,51 @@
       let
         pkgs = import nixpkgs { inherit system; };
         naersk-lib = pkgs.callPackage naersk { };
-        buildInputs = with pkgs; [ openssl pkg-config ];
-        nativeBuildInputs = with pkgs; [ cargo rustc rustfmt rust-analyzer pre-commit rustPackages.clippy ];
-      in
-      {
-        defaultPackage = naersk-lib.buildPackage {
-          inherit buildInputs;
+        buildInputs = with pkgs; [ openssl cacert curl ];
+        nativeBuildInputs = with pkgs; [ pkg-config cargo rustc rustfmt rustPackages.clippy ];
+        rustPackage = naersk-lib.buildPackage {
+          inherit buildInputs nativeBuildInputs;
+          # China registry mirror
+          cratesDownloadUrl = "https://crates-io.proxy.ustclug.org";
           src = ./.;
         };
+        dockerImage = pkgs.dockerTools.buildLayeredImage {
+          name = "nextdotid/relation_server";
+          tag = "latest";
+          created = "now";
+          contents = [ rustPackage pkgs.curl pkgs.cacert ];
+          config = {
+            Workingdir = "/app";
+            Cmd = [ "standalone" ];
+            ExposedPorts = {
+              "8000/tcp" = {};
+            };
+            Volumes = {
+              "/app/config" = {};
+            };
+            Test = [ "CMD" "curl" "-s" "http://127.0.0.1:8000/" ];
+            Interval = 30000000000; # 30s
+            Timeout =  10000000000; # 10s
+            Retries = 3;
+            Labels = {
+              "maintainer" = "Nyk Ma <nykma@mask.io>";
+              "org.opencontainers.image.description" = "RelationService: relation aggregation.";
+              "org.opencontainers.image.source" = "https://github.com/NextDotID/relation_server";
+              "org.opencontainers.image.title" = "relation_server";
+              "org.opencontainers.image.url" = "https://github.com/NextDotID/relation_server";
+            };
+          };
+        };
+      in {
+        packages = {
+          main = rustPackage;
+          docker = dockerImage;
+        };
+        defaultPackage = rustPackage;
         devShell = with pkgs; mkShell {
-          buildInputs = buildInputs ++ nativeBuildInputs;
+          buildInputs = buildInputs ++
+                        nativeBuildInputs ++
+                        (with pkgs; [ act rust-analyzer pre-commit ]);
           RUST_SRC_PATH = rustPlatform.rustLibSrc;
         };
       });
diff --git a/justfile b/justfile
index 7b7baeb..8f120b8 100644
--- a/justfile
+++ b/justfile
@@ -35,3 +35,9 @@ clean:
 # npm install -g get-graphql-schema
 get-schema:
     get-graphql-schema https://api-v2.lens.dev/playground > src/upstream/lensv2/schema.graphql
+
+# Build docker image using nix:
+build-docker:
+  nix build '.#docker'
+  docker load -i ./result
+  echo 'Image: nextdotid/relation_server:latest'