build workflow (Farama-Foundation/Gymnasium-Robotics)

The build workflow from Farama-Foundation/Gymnasium-Robotics, explained and optimized by Latchkey.

CI health: C - fair

Point runs-on at Latchkey and get run de-duplication, job timeouts, self-healing for flaky steps, and up to 58% lower cost, applied automatically.

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Source: Farama-Foundation/Gymnasium-Robotics.github/workflows/build.ymlLicense MITView source

What it does

This is the build workflow from the Farama-Foundation/Gymnasium-Robotics repository, a real project running GitHub Actions. It is shown here with attribution under its MIT license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

workflow (.yml)

name: build
on: [pull_request, push]

permissions:
  contents: read

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: ["3.10", "3.11", "3.12", "3.13"]
    steps:
      - uses: actions/checkout@v7
      - run: |
           docker build -f .github/docker/py.Dockerfile \
             --build-arg PYTHON_VERSION=${{ matrix.python-version }} \
             --tag gymnasium-robotics-docker .
      - name: Run tests
        run: docker run gymnasium-robotics-docker pytest

The same workflow, on Latchkey

Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.

name: build
on: [pull_request, push]
 
permissions:
  contents: read
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  build:
    timeout-minutes: 30
    runs-on: latchkey-small
    strategy:
      matrix:
        python-version: ["3.10", "3.11", "3.12", "3.13"]
    steps:
      - uses: actions/checkout@v7
      - run: |
           docker build -f .github/docker/py.Dockerfile \
             --build-arg PYTHON_VERSION=${{ matrix.python-version }} \
             --tag gymnasium-robotics-docker .
      - name: Run tests
        run: docker run gymnasium-robotics-docker pytest

What changed

Run on Latchkey managed runners with one line (runs-on), which apply the fixes below automatically and self-heal transient failures. This example uses latchkey-small; pick the runner size that fits the job.
Cancel superseded runs when a branch or PR gets a newer push.
Add a job timeout so a hung step cannot burn hours of runner time.

What Latchkey heals here

This workflow has steps that commonly fail on transient issues (network, registries, flaky browsers). On Latchkey managed runners they are detected, retried, and self-healed instead of failing your build:

Container pulls and builds

This workflow runs 1 job (4 with the matrix expanded) per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow

actions/checkout