Senior LevelGit & GitHub
How do you build custom GitHub Actions (Docker container vs Composite Actions)?
❓ Interview Prompt: Compare custom GitHub Action types: JavaScript Actions (fast execution), Composite Actions (reusable steps), and Docker Container Actions (isolated environments).
Composite Actions combine shell scripts and steps into reusable units. Docker container actions package custom execution environments into Docker images for 100% isolation.
Code Implementation Example
yaml
name: "Custom Setup & Lint"
runs:
using: "composite"
steps:
- run: npm run lint
shell: bash💡Building reusable Composite GitHub Action combining steps.
🎯 Interview Key Takeaway
Build Composite Actions for reusable workflow steps, and Docker Container Actions for complex custom CLI environments.
#Custom Actions#Composite Actions#Docker Actions#Senior
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