Add Docker Compose installation step to CI workflow

[Copilot]

GitHub Actions runners no longer include docker-compose by default, causing CI failures when attempting to run tests.

Changes

• Added explicit Docker Compose installation step in .github/workflows/ci.yml after checkout
• Uses apt-get to install docker-compose package before test execution

steps:
  - name: Checkout the repository
    uses: actions/checkout@v2
  - name: Install Docker Compose
    run: sudo apt-get update && sudo apt-get install -y docker-compose
  - name: Run the tests
    run: docker-compose -f docker-compose.yml -f docker-compose.test.yml up --build --exit-code-from ideals-test

Original prompt

The CI workflow fails because the docker-compose command is not available by default on the runner. To fix this, update the .github/workflows/ci.yml workflow so that it explicitly installs Docker Compose before running any docker-compose commands. Specifically, after the checkout step, insert a step that installs Docker Compose via apt in Ubuntu (using sudo apt-get update && sudo apt-get install -y docker-compose).

The fixed steps section should look like this:

steps:
  - name: Checkout the repository
    uses: actions/checkout@v2
  - name: Install Docker Compose
    run: sudo apt-get update && sudo apt-get install -y docker-compose
  - name: Run the tests
    run: docker-compose -f docker-compose.yml -f docker-compose.test.yml up --build --exit-code-from ideals-test

Apply this change to .github/workflows/ci.yml at ref f16a8e6432f3b88522f1947d22ed8741465e5b17.

This pull request was created as a result of the following prompt from Copilot chat.

The CI workflow fails because the docker-compose command is not available by default on the runner. To fix this, update the .github/workflows/ci.yml workflow so that it explicitly installs Docker Compose before running any docker-compose commands. Specifically, after the checkout step, insert a step that installs Docker Compose via apt in Ubuntu (using sudo apt-get update && sudo apt-get install -y docker-compose).

The fixed steps section should look like this:

steps:
  - name: Checkout the repository
    uses: actions/checkout@v2
  - name: Install Docker Compose
    run: sudo apt-get update && sudo apt-get install -y docker-compose
  - name: Run the tests
    run: docker-compose -f docker-compose.yml -f docker-compose.test.yml up --build --exit-code-from ideals-test

Apply this change to .github/workflows/ci.yml at ref f16a8e6432f3b88522f1947d22ed8741465e5b17.

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