Refactor Dockerfile to multi-stage build with CI and Coder variants #2

Merged

GuillaumeHemmen merged 2 commits from feat/make-sindri-a-simple-base-image into master

2026-02-19 16:13:58 +00:00

GuillaumeHemmen commented

2026-02-19 16:11:00 +00:00

Owner

Summary

Refactored the Dockerfile from a monolithic single-stage build into a lean multi-stage architecture with two distinct variants optimized for different use cases.

Changes

Multi-stage architecture: Introduced three stages (base, ci, coder)
- base: Internal foundation with Ubuntu 24.04, essential utilities, and timezone configuration
- ci: Lightweight variant with Node.js LTS for CI/CD pipelines
- coder: Full development environment with NVM, non-root user, and custom shell configuration
Removed bloat: Stripped out 20+ programming languages, build tools, and services not needed for base functionality
- Removed: Python dev tools, Java/Go/Rust/Ruby/PHP/Perl, Bazel, Docker/K8s tools, browsers, Terraform, etc.
- Kept: Core utilities, network tools, compression tools, git, and development essentials
User-focused coder variant:
- Non-root coder user with passwordless sudo
- NVM installation with configurable Node.js version (default: 24)
- Custom bash prompt and environment setup
- Global gitignore from toptal.com
- Perfect for VS Code Remote Containers, Coder.com, and GitHub Codespaces
Build arguments: Added configurable parameters for the coder variant
- ARG_TZ: Timezone configuration (default: Europe/Paris)
- ARG_NODE_MAJOR: Node.js major version for NVM (default: 24)
- GITIGNORE_URL: Custom gitignore template URL
Updated documentation: Completely rewrote README.md to reflect the new architecture
- Clear explanation of each variant and its use case
- Updated all examples to use proper image tags (ci-latest, coder-latest)
- Added CI/CD workflow documentation with KANIKO_TARGET matrix

Impact

Smaller images: Each variant only contains what it needs
Faster builds: Multi-stage caching improves build times
Better DX: Coder variant provides a ready-to-use development environment
Flexible: Easy to extend either variant for specific needs

Breaking Changes

Image tags now use prefixes: ci-* and coder-* instead of a single latest tag
Removed all programming languages except Node.js from base images
Changed from root user to coder user in the coder variant

Testing

CI variant builds successfully
Coder variant builds successfully
Node.js is functional in both variants
NVM works correctly in coder variant

## Summary Refactored the Dockerfile from a monolithic single-stage build into a lean multi-stage architecture with two distinct variants optimized for different use cases. ## Changes - **Multi-stage architecture**: Introduced three stages (`base`, `ci`, `coder`) - `base`: Internal foundation with Ubuntu 24.04, essential utilities, and timezone configuration - `ci`: Lightweight variant with Node.js LTS for CI/CD pipelines - `coder`: Full development environment with NVM, non-root user, and custom shell configuration - **Removed bloat**: Stripped out 20+ programming languages, build tools, and services not needed for base functionality - Removed: Python dev tools, Java/Go/Rust/Ruby/PHP/Perl, Bazel, Docker/K8s tools, browsers, Terraform, etc. - Kept: Core utilities, network tools, compression tools, git, and development essentials - **User-focused coder variant**: - Non-root `coder` user with passwordless sudo - NVM installation with configurable Node.js version (default: 24) - Custom bash prompt and environment setup - Global gitignore from toptal.com - Perfect for VS Code Remote Containers, Coder.com, and GitHub Codespaces - **Build arguments**: Added configurable parameters for the coder variant - `ARG_TZ`: Timezone configuration (default: Europe/Paris) - `ARG_NODE_MAJOR`: Node.js major version for NVM (default: 24) - `GITIGNORE_URL`: Custom gitignore template URL - **Updated documentation**: Completely rewrote README.md to reflect the new architecture - Clear explanation of each variant and its use case - Updated all examples to use proper image tags (`ci-latest`, `coder-latest`) - Added CI/CD workflow documentation with KANIKO_TARGET matrix ## Impact - **Smaller images**: Each variant only contains what it needs - **Faster builds**: Multi-stage caching improves build times - **Better DX**: Coder variant provides a ready-to-use development environment - **Flexible**: Easy to extend either variant for specific needs ## Breaking Changes - Image tags now use prefixes: `ci-*` and `coder-*` instead of a single `latest` tag - Removed all programming languages except Node.js from base images - Changed from root user to `coder` user in the coder variant ## Testing - [x] CI variant builds successfully - [x] Coder variant builds successfully - [x] Node.js is functional in both variants - [x] NVM works correctly in coder variant

GuillaumeHemmen added 2 commits

2026-02-19 16:11:01 +00:00

#0000 - Split workflows and update Dockerfile for targeted multi-stage builds

/ docker-dev-coder (push) Successful in 3m0s

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/ docker-dev-ci (push) Successful in 2m10s

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55cc34e302

- **Workflows**: Separated `ci` and `coder` jobs in both `docker-dev.yaml` and `docker-tag.yaml` for better variant builds.
- **Dockerfile**: Introduced `base`, `ci`, and `coder` stages for clearer multi-stage build targeting.
- **README**: Updated to reflect new image variants and usage examples.

#0000 - Update README to reflect new Docker image variants and usage clarifications

/ docker-dev-ci (push) Successful in 1m53s

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/ docker-dev-coder (push) Successful in 2m58s

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af1f3d5b2c

GuillaumeHemmen scheduled this pull request to auto merge when all checks succeed

2026-02-19 16:13:44 +00:00

GuillaumeHemmen merged commit 81f0a3cee3 into master

2026-02-19 16:13:58 +00:00

GuillaumeHemmen deleted branch feat/make-sindri-a-simple-base-image

2026-02-19 16:13:58 +00:00