Problem: use prebuilt image in testground

testground/README.md

@@ -1,13 +1,20 @@
-# Guide
-
 [Testground documentation](https://docs.testground.ai/)
 
-## Getting started
+## Build Image
+
+>  Prerequisites: nix, linux remote builder for macOS
+
+You can test with the prebuilt images in github registry, to build the images locally for yourself:
 
-### Prerequisites
+```bash
+$ nix build .#testground-image
+# for mac: nix build .#legacyPackages.aarch64-linux.testground-image
+$ docker load < ./result
+Loaded image: cronos-testground:<imageID>
+$ docker tag cronos-testground:<imageID> ghcr.io/crypto-org-chain/cronos-testground:latest
+```
 
-- docker
-- go 1.22, or higher
+## Run Test
 
 ### Install Testground
 
@@ -20,15 +27,15 @@ $ make install
 
 It'll install the `testground` binary in your `$GOPATH/bin` directory, and build several docker images.
 
-### Running Testground
+### Run Testground Daemon
 
 ```bash
 $ TESTGROUND_HOME=$PWD/data testground daemon
 ```
 
 Keep the daemon process running during the test.
 
-### Running Test Plan
+### Run Test Plan
 
 Import the test plan before the first run:
 

testground/benchmark/benchmark/cli.py

@@ -9,10 +9,17 @@ def __init__(self, cmd):
     def raw(self, *args, stdin=None, stderr=subprocess.STDOUT, **kwargs):
         "execute the command"
         args = " ".join(build_cli_args_safe(*args, **kwargs))
-        return interact(
+        stdout = interact(
             f"{self.cmd} {args}", input=stdin, stderr=stderr, env=os.environ
         )
 
+        # filter out "<jemalloc>:" warning messages
+        stdout = b"\n".join(
+            line for line in stdout.splitlines() if not line.startswith(b"<jemalloc>:")
+        )
+
+        return stdout
+
     def __call__(self, *args, **kwargs):
         "execute the command and clean the output"
         return self.raw(*args, **kwargs).decode().strip()

testground/benchmark/compositions/local.toml

@@ -6,7 +6,7 @@ author = "core-app"
 plan = "benchmark"
 case = "entrypoint"
 total_instances = 10
-builder = "docker:nix"
+builder = "docker:go" # not used
 runner = "local:docker"
 disable_metrics = false
 
@@ -16,12 +16,14 @@ halt_height = "5"
 
 [[groups]]
 id = "validators"
-builder = "docker:nix"
 [groups.instances]
 count = 3
+[groups.run]
+artifact = "ghcr.io/crypto-org-chain/cronos-testground:latest"
 
 [[groups]]
 id = "fullnodes"
-builder = "docker:nix"
 [groups.instances]
 count = 7
+[groups.run]
+artifact = "ghcr.io/crypto-org-chain/cronos-testground:latest"

testground/benchmark/manifest.toml

@@ -1,12 +1,9 @@
 name = "benchmark"
 
 [defaults]
-builder = "docker:nix"
+builder = "local:docker"
 runner = "local:docker"
 
-[builders."docker:nix"]
-enabled = true
-
 [runners."local:docker"]
 enabled = true