Which is easier to set up, GitHub Actions or GitLab CI?

GitHub Actions is generally considered easier to start with because of the massive marketplace of pre-built actions. You can set up a CI pipeline in minutes by choosing a starter workflow. GitLab CI has a simpler, more consistent configuration syntax (.gitlab-ci.yml) that some developers find easier to understand once learned. Both use YAML configuration and have excellent documentation.

Is GitHub Actions or GitLab CI cheaper?

GitHub Actions offers 2,000 minutes per month free for public repos (unlimited) and private repos on the Free plan. GitLab offers 400 CI/CD minutes per month on the free tier. For open source projects, GitHub Actions is significantly more generous. For private projects with heavy CI usage, costs are similar at the paid tiers. Both allow self-hosted runners at no per-minute cost.

Can I migrate from GitLab CI to GitHub Actions?

Yes. The concepts map closely: GitLab stages map to GitHub jobs with dependencies, GitLab jobs map to GitHub jobs, script blocks map to run steps, and GitLab CI variables map to GitHub secrets and variables. GitHub provides official migration guides and tools. The main differences are in syntax and the marketplace ecosystem (GitHub has more pre-built actions).

Which has better Docker support?

Both have excellent Docker support. GitLab has a built-in container registry included with every project. GitHub offers GitHub Container Registry (ghcr.io). Both can build, push, and deploy Docker images. GitLab's built-in registry is slightly more convenient since it is integrated into the same platform without additional configuration.

Should I use GitHub Actions or GitLab CI for my team?

If your code is already on GitHub, use GitHub Actions. If it is on GitLab, use GitLab CI. The CI/CD tool is rarely worth switching platforms for. Both are production-grade with comparable features. GitHub Actions has a larger action marketplace and better community ecosystem. GitLab CI offers a more integrated DevOps platform with built-in container registry, security scanning, and project management.

GitHub Actions vs GitLab CI: CI/CD Comparison

The two most popular CI/CD platforms, compared feature by feature. Choose based on where your code lives and what your workflow needs.

Quick Comparison

Feature	GitHub Actions	GitLab CI
Config File	.github/workflows/*.yml	.gitlab-ci.yml
Free Minutes (private)	2,000/month	400/month
Marketplace	20,000+ reusable actions	Templates + components
Container Registry	ghcr.io (separate)	Built-in per project
Self-hosted Runners	Yes (free)	Yes (free)
Security Scanning	Via actions (Dependabot, CodeQL)	Built-in SAST, DAST, dependency scan
Environments	Yes (with protection rules)	Yes (with approval gates)
Platform	SaaS (GitHub.com)	SaaS + self-hosted option

GitHub Actions

GitHub Actions is deeply integrated into the GitHub platform. Workflows are triggered by GitHub events (push, pull request, issue creation, schedule) and run on GitHub-hosted or self-hosted runners. Its greatest strength is the marketplace: over 20,000 pre-built actions for deploying to AWS, Azure, Cloudflare, Vercel, and virtually every other platform.

Configuration uses YAML files in the .github/workflows/ directory. Multiple workflow files can coexist, each triggered independently. The syntax is expressive with support for matrix builds (testing across multiple OS/language versions), conditional execution, reusable workflows, and composite actions for sharing logic across projects.

GitLab CI/CD

GitLab CI is part of GitLab's all-in-one DevOps platform. A single .gitlab-ci.yml file defines the entire pipeline using a stages-and-jobs model. GitLab's advantage is its integrated toolchain: container registry, security scanning (SAST, DAST, dependency scanning), environment management, and project management are all built into the same platform.

GitLab also offers a self-hosted option, which is critical for organizations that need to run their entire DevOps platform on-premises or in a private cloud. GitLab's Auto DevOps feature can automatically detect your project type and create a CI/CD pipeline without any configuration.

When to Choose GitHub Actions

Your code is already on GitHub
You want the largest ecosystem of pre-built actions
You work on open source projects (unlimited free minutes)
You need integration with GitHub's PR, Issues, and Projects
You prefer a best-of-breed approach (GitHub for code, separate tools for other concerns)

When to Choose GitLab CI

Your code is already on GitLab
You want an all-in-one DevOps platform
You need built-in security scanning without third-party actions
You require a self-hosted solution for compliance or security
You prefer one platform for code, CI/CD, registry, and project management

Try These Tools

YAML Formatter -- Format and validate CI/CD configuration files
Diff Checker -- Compare pipeline configuration changes
JSON to YAML -- Convert between configuration formats

Frequently Asked Questions

GitHub Actions has a larger marketplace of starter workflows for quick setup. GitLab CI has a simpler, more consistent YAML syntax. Both have excellent documentation and can be set up in minutes.

GitHub offers 2,000 free minutes (unlimited for public repos). GitLab offers 400 free minutes. For open source, GitHub is more generous. Paid tiers are comparable. Both support free self-hosted runners.

Yes. Concepts map closely: stages to job dependencies, jobs to jobs, script to run steps, variables to secrets. GitHub provides migration guides. The main difference is the action marketplace ecosystem.

Both are excellent. GitLab has a built-in container registry per project. GitHub offers ghcr.io. Both build, push, and deploy Docker images. GitLab's registry is slightly more integrated.

Use whichever platform hosts your code. The CI/CD tool rarely justifies switching platforms. GitHub Actions has a larger marketplace; GitLab offers a more integrated all-in-one platform.