Problem: testground image not pushed to registry

Solution:
- push to github container registry

.github/workflows/container.yml

@@ -0,0 +1,38 @@
+name: Push Testground Image
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - "v*.*.*"
+
+env:
+  IMAGE_NAME: testground-testcase
+
+jobs:
+
+  push:
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+      contents: read
+
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v23
+        with:
+          nix_path: nixpkgs=channel:nixos-22.11
+          extra_nix_config: |
+            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
+      - uses: cachix/cachix-action@v12
+        with:
+          name: cronos
+          signingKey: "${{ secrets.CACHIX_SIGNING_KEY }}"
+      - name: build and push image
+        run: |
+          REPO_NAME=${{ github.event.repository.name }}
+          TAG=${{ github.ref_name }}
+          OCI_ARCHIVE=$(nix build --no-link --print-out-paths .#testground-image)
+          echo $REPO_NAME $TAG $OCI_ARCHIVE
+          skopeo --insecure-policy copy --dest-creds="${REPO_NAME}:${{ secrets.GITHUB_TOKEN }}" "docker-archive:${OCI_ARCHIVE}" "docker://${REPO_NAME}/testground-image:${TAG}"

flake.nix

@@ -31,13 +31,15 @@
         let
           pkgs = import nixpkgs {
             inherit system;
-            overlays = self.overlays.default;
+            overlays = self.overlays.default ++ [
+              (import ./testground/benchmark/overlay.nix)
+            ];
             config = { };
           };
         in
         rec {
           packages = pkgs.cronos-matrix // {
-            inherit (pkgs) rocksdb;
+            inherit (pkgs) rocksdb testground-image;
           };
           apps = {
             cronosd = mkApp packages.cronosd;

nix/benchmark.nix

@@ -0,0 +1,32 @@
+{ lib, poetry2nix, python311, nix-gitignore }:
+let
+  overrides = poetry2nix.overrides.withDefaults
+    (self: super:
+      let
+        buildSystems = {
+          pystarport = [ "poetry-core" ];
+          durations = [ "setuptools" ];
+          multitail2 = [ "setuptools" ];
+          docker = [ "hatchling" "hatch-vcs" ];
+          pyunormalize = [ "setuptools" ];
+        };
+      in
+      lib.mapAttrs
+        (attr: systems: super.${attr}.overridePythonAttrs
+          (old: {
+            nativeBuildInputs = (old.nativeBuildInputs or [ ]) ++ map (a: self.${a}) systems;
+          }))
+        buildSystems
+    );
+in
+poetry2nix.mkPoetryApplication {
+  projectDir = nix-gitignore.gitignoreSourcePure [
+    "/*" # ignore all, then add whitelists
+    "!/benchmark/"
+    "!poetry.lock"
+    "!pyproject.toml"
+  ] ../testground/benchmark;
+  python = python311;
+  inherit overrides;
+}
+

nix/testground-image.nix

@@ -0,0 +1,16 @@
+{ dockerTools, cronos-matrix, test-env, testground-testcase }:
+dockerTools.buildLayeredImage {
+  name = "cronos-testground";
+  contents = [
+    testground-testcase
+    test-env
+    cronos-matrix.cronosd
+  ];
+  config = {
+    Expose = [ 9090 26657 26656 1317 26658 26660 26659 30000 ];
+    Cmd = [ "/bin/testground-testcase" ];
+    Env = [
+      "PYTHONUNBUFFERED=1"
+    ];
+  };
+}