wip: add images for contrail 5.0 on top of tungsten images

default.nix

@@ -5,5 +5,7 @@
 let
   tools = import ./tools-overlay.nix;
   contrail = import ./contrail-overlay.nix;
+  pkgs = import nixpkgs { overlays = [ tools contrail ]; };
+  dockerImages = pkgs.callPackages ./pkgs/docker-images/default.nix { };
 
-in import nixpkgs { overlays = [ tools contrail ]; }
+in pkgs // { inherit dockerImages; }

pkgs/docker-images/default.nix

@@ -0,0 +1,50 @@
+{ pkgs, runCommand, dockerTools, contrail50 }:
+
+let
+  tungstenApi = dockerTools.pullImage {
+    imageName = "docker.io/opencontrailnightly/contrail-controller-config-api";
+    imageDigest = "sha256:7ebb285df2fdd512f6b885b772e6b2383ad1f23488d6a767f8bb21e55239fe62";
+    finalImageTag = "latest";
+    sha256 = "1qpw5vdvga3qd66rzdfsdw3wc51jf7hd9k16l41yphqrwc2ng75h";
+  };
+
+  tungstenSchema = dockerTools.pullImage {
+    imageName = "docker.io/opencontrailnightly/contrail-controller-config-schema";
+    imageDigest = "sha256:b6bc624a05de7d554df37096431f1ea0ea2086368e9f96fbdf1868f5eeb53a16";
+    finalImageTag = "latest";
+    sha256 = "06kz45wfgnyzi717dv79im263pl5pwpxklangqd3a6hzh4xd7g8p";
+  };
+
+  # This is because symlinked directory in the parent image are not
+  # supported by nixpkgs.dockerTools.buildImage:/
+  # See https://github.com/NixOS/nixpkgs/issues/57073
+  toUsrBin = drv: runCommand "${drv.name}-to-usr-bin" {} ''
+    mkdir -p $out/usr/bin/
+    for i in $(ls ${drv}/bin/); do
+      ln -s ${drv}/bin/$i $out/usr/bin/$i
+    done
+  '';
+
+in {
+  contrailApi = dockerTools.buildImage {
+    name = "contrail-api";
+    tag = "r5.0";
+    fromImage = tungstenApi;
+    contents = toUsrBin contrail50.apiServer;
+    config = {
+      Entrypoint = [ "/entrypoint.sh" ];
+    };
+  };
+  contrailSchema = dockerTools.buildImage {
+    name = "contrail-schema";
+    tag = "r5.0";
+    fromImage = tungstenSchema;
+    contents = toUsrBin contrail50.schemaTransformer;
+    config = {
+      Entrypoint = [ "/entrypoint.sh" ];
+    };
+  };
+
+  # TODO: Add all other images. Since binaries already exist, it's a
+  # trivial task.
+}