build docker via nix

.dockerignore

@@ -1,4 +0,0 @@
-/target
-
-.env*
-!.envrc

Dockerfile

@@ -1,22 +0,0 @@
-FROM rust:1.62.0-slim-buster
-
-WORKDIR /app
-
-RUN cargo init .
-
-COPY Cargo.* ./
-
-RUN cargo build --release \
-  && rm -rf src
-
-COPY ./src ./src
-
-RUN cargo install --bin vnetod --path . \
-  && rm -rf ./src Cargo.*
-
-VOLUME ["/data"]
-
-WORKDIR /data
-
-ENTRYPOINT ["/usr/local/cargo/bin/vnetod"]
-

flake.nix

@@ -10,34 +10,46 @@
 
       version = "${cargoToml.package.version}_${builtins.substring 0 8 self.lastModifiedDate}_${self.shortRev or "dirty"}";
     in
-    utils.lib.eachDefaultSystem
-      (system:
-        let
-          inherit (nixpkgs) lib;
-          pkgs = import nixpkgs { inherit system; };
+    utils.lib.eachDefaultSystem (system:
+      let
+        inherit (nixpkgs) lib;
+        pkgs = import nixpkgs { inherit system; };
 
-          vnetod = pkgs.rustPlatform.buildRustPackage {
-            name = "vnetod-${version}";
+        vnetod = pkgs.rustPlatform.buildRustPackage {
+          name = "vnetod-${version}";
 
-            src = lib.cleanSource ./.;
-            cargoLock.lockFile = ./Cargo.lock;
+          src = lib.cleanSource ./.;
+          cargoLock.lockFile = ./Cargo.lock;
 
-            doCheck = true;
-          };
-        in
-        {
-          apps.default = {
-            type = "app";
-            program = "${vnetod}/bin/vnetod";
+          doCheck = true;
+        };
+
+        docker = pkgs.dockerTools.buildLayeredImage {
+          name = "pleshevskiy/vnetod";
+          tag = cargoToml.package.version;
+          config = {
+            Volumes."/data" = { };
+            WorkingDir = "/data";
+            Entrypoint = [ "${vnetod}/bin/vnetod" ];
           };
+        };
+      in
+      {
+        apps.default = {
+          type = "app";
+          program = "${vnetod}/bin/vnetod";
+        };
 
-          packages.default = vnetod;
+        packages = {
+          inherit docker;
+          default = vnetod;
+        };
 
-          devShell = pkgs.mkShell {
-            packages = with pkgs; [ cargo rustc rustfmt clippy rust-analyzer ];
-            RUST_SRC_PATH = pkgs.rustPlatform.rustLibSrc;
-          };
+        devShell = pkgs.mkShell {
+          packages = with pkgs; [ cargo rustc rustfmt clippy rust-analyzer ];
+          RUST_SRC_PATH = pkgs.rustPlatform.rustLibSrc;
+        };
 
-          overlays = f: p: { inherit vnetod; };
-        });
+        overlays = f: p: { inherit vnetod; };
+      });
 }