Nix docker

.github/workflows/registry.yml

@@ -0,0 +1,41 @@
+
+name: "Docker Registry Push"
+on:
+  push:
+    tags: ['*']
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+    - uses: actions/checkout@v3
+    - uses: cachix/install-nix-action@v18
+      with:
+        extra_nix_config: |
+          access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
+    - uses: cachix/cachix-action@v11
+      with:
+        name: fleetbot
+        signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
+    - name: Log in to the Container registry
+      uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9
+      with:
+        registry: ${{ env.REGISTRY }}
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+    - run: nix build -L .#ex_fleet_yards_docker
+    - name: "Import and Push image"
+      run: |
+        docker load < result
+        docker tag exfleetyards:latest ghcr.io/fleetyards/exfleetyards:latest
+        docker tag exfleetyards:latest ghcr.io/fleetyards/exfleetyards:${{ github.ref_name }}
+        docker push ghcr.io/fleetyards/exfleetyards:latest
+        docker push ghcr.io/fleetyards/exfleetyards:${{ github.ref_name }}

flake.nix

@@ -36,7 +36,7 @@
       nixpkgsFor = forAllSystems (system:
         import nixpkgs {
           inherit system;
-          overlays = [ self.overlays.default ];
+          overlays = [ self.overlays.default self.overlays.docker ];
         });
     in {
       overlays.fleet = final: prev: {
@@ -77,10 +77,33 @@
               nativeBuildInputs = [ rebar3 ];
             }) { };
       };
+      overlays.docker = final: prev: {
+        ex_fleet_yards_docker = final.callPackage
+          ({ lib, ex_fleet_yards, dockerTools, buildEnv }:
+            dockerTools.buildImage {
+              name = "ExFleetYards";
+              tag = "latest";
+
+              copyToRoot = buildEnv {
+                name = "ex_fleet_yards-root";
+                paths = [ ex_fleet_yards ];
+                pathsToLink = [ "/bin" ];
+              };
+
+              config = {
+                Entrypoint = [ "/bin/ex_fleet_yards_web" ];
+                Cmd = [ "start" ];
+                ExposedPorts."4000/tcp" = { };
+                Env = [ "FLEETYARDS_CONFIG_PATH=/config/config.exs" ];
+                Volumes."/config/" = { };
+              };
+            }) { };
+      };
       overlays.default = self.overlays.fleet;
 
       packages = forAllSystems (system: {
-        inherit (nixpkgsFor.${system}) ex_fleet_yards appsignal_nif;
+        inherit (nixpkgsFor.${system})
+          ex_fleet_yards appsignal_nif ex_fleet_yards_docker;
         default = self.packages.${system}.ex_fleet_yards;
       });