Deploy an agent

Configure shell scripts with defensive practices to ensure reliability and debuggability. Use appropriate set options for error handling and debugging, implement safe defaults that require explicit opt-in for risky operations, and preserve execution state when changing directories.

Key practices:

• Use set -ex instead of just set -e to output commands as they execute for better debugging
• Default to safe behaviors and require explicit conditions for potentially risky operations (e.g., defaulting to dev releases and opting into stable releases only on exact matches)
• Preserve directory state using pushd/popd instead of cd when temporary directory changes are needed
• Document supported configuration values and their behaviors clearly

Example of defensive directory handling:

# Instead of:
cd "${PROJECT_PATH}"
pipenv install

# Use:
pushd "${PROJECT_PATH}"
pipenv install
popd

This approach prevents unintended side effects on subsequent script execution and makes scripts more predictable in different environments.