Improvements to Container CI

[tylertitsworth]

Description

Update CI to follow DevOps and DevSecOps best practices.

How it works

Given an example(s) (AudioQnA), this workflow creates jobs that perform container CI on that example on a pull request based on whether or not those examples were modified in that PR.

# .github/workflows/example-ci.yaml
on:
  pull_request: null
...
# This job creates a list of examples as a matrix to test based on a git diff command
- name: Output Modified example Directories
  id: example-list
  run: |
    # Get diff array filtered by specific filetypes
    DIFF=$(git diff --diff-filter=d \
        --name-only ${{ github.event.pull_request.base.sha }}...${{ github.event.pull_request.head.sha }} \
        -- '*/*Dockerfile' '*.py' '*.yaml' '*.yml' '*.sh' '*/*requirements.txt' '*.json' '*.ts' '*.js' | \
        jq -R '.' | jq -sc '.' \
    )
    # Search for compose files in each file to determine the container examples
    DOCKER_COMPOSE_PATHS=()
    for path in $(echo $DIFF | jq -r '.[]'); do
      while [[ "$path" != "." ]]; do
        DIR_PATH=$(dirname "$path")
        if [ -n "$(find "$DIR_PATH" -maxdepth 1 -name 'docker-compose.yaml' -print -quit)" ] && [ "$DIR_PATH" != "." ]; then
          DOCKER_COMPOSE_PATHS+=("$DIR_PATH")
          path="."
        else
          path="$DIR_PATH"
        fi
      done
    done
    # Convert the array to a JSON array
    DOCKER_COMPOSE_PATHS_JSON=$(printf '%s\n' "${DOCKER_COMPOSE_PATHS[@]}" | jq -R '.' | jq -sc 'unique_by(.)')
    echo "FOLDERS=$DOCKER_COMPOSE_PATHS_JSON" >> $GITHUB_OUTPUT

Issues

n/a

Type of change

List the type of change like below. Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds new functionality)
• Breaking change (fix or feature that would break existing design and interface)

Dependencies

n/a

Tests

I don't have the runners required to do the validation portion, however when previously testing with ubuntu-latest I was able to launch the test script from the correct directory on that runner before it ran out of space.
https://github.com/tylertitsworth/GenAIExamples/actions/runs/9896085740?pr=3