fix: project improvements and best practices (#97)

* fix: project improvements and best practices

- Fix Go version: 1.24.0 → 1.23 (use stable release)
- Add HEALTHCHECK to FastAPI Dockerfile for container self-healing
- Remove duplicate httpx dependency from fastapi/requirements.txt
- Add .dockerignore files to all reference apps (reduces image size)
- Remove Cargo.lock from .gitignore (enables reproducible Rust builds)
- Track Cargo.lock for rust reference app

* fix: revert Go version to 1.24.0 (required by dependencies)

golang.org/x/net@v0.47.0 requires go >= 1.24.0

Author: NormB

.gitignore

@@ -93,7 +93,6 @@ package-lock.json.bak
 
 # Rust
 target/
-Cargo.lock
 
 # Test cache
 .pytest_cache/

reference-apps/fastapi-api-first/.dockerignore

@@ -0,0 +1,42 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+.venv/
+venv/
+ENV/
+*.egg-info/
+.eggs/
+dist/
+build/
+
+# Testing
+.pytest_cache/
+.coverage
+htmlcov/
+.tox/
+
+# IDE
+.vscode/
+.idea/
+*.iml
+
+# Git
+.git/
+.gitignore
+
+# Environment
+.env
+.env.*
+*.env
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Documentation
+*.md
+!README.md
+docs/

reference-apps/fastapi/.dockerignore

@@ -0,0 +1,42 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+.venv/
+venv/
+ENV/
+*.egg-info/
+.eggs/
+dist/
+build/
+
+# Testing
+.pytest_cache/
+.coverage
+htmlcov/
+.tox/
+
+# IDE
+.vscode/
+.idea/
+*.iml
+
+# Git
+.git/
+.gitignore
+
+# Environment
+.env
+.env.*
+*.env
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Documentation
+*.md
+!README.md
+docs/

reference-apps/fastapi/Dockerfile

@@ -29,5 +29,9 @@ USER appuser
 # Expose ports (HTTP and HTTPS)
 EXPOSE 8000 8443
 
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+  CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/health')" || exit 1
+
 # Run initialization script (which calls start.sh)
 CMD ["/app/init.sh"]

reference-apps/fastapi/requirements.txt

@@ -34,4 +34,3 @@ pytest==9.0.2
 pytest-asyncio==1.3.0
 pytest-cov==7.0.0
 pytest-mock==3.15.1
-httpx==0.28.1  # Already listed above but needed for testing

reference-apps/golang/.dockerignore

@@ -0,0 +1,35 @@
+# Go
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+*.test
+*.out
+vendor/
+
+# IDE
+.vscode/
+.idea/
+*.iml
+
+# Git
+.git/
+.gitignore
+
+# Environment
+.env
+.env.*
+*.env
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Documentation
+*.md
+!README.md
+docs/
+
+# Build artifacts
+bin/

reference-apps/nodejs/.dockerignore

@@ -0,0 +1,38 @@
+# Node.js
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.npm/
+.yarn/
+
+# Build
+dist/
+build/
+coverage/
+
+# IDE
+.vscode/
+.idea/
+*.iml
+
+# Git
+.git/
+.gitignore
+
+# Environment
+.env
+.env.*
+*.env
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Documentation
+*.md
+!README.md
+docs/
+
+# Test
+.nyc_output/

reference-apps/rust/.dockerignore

@@ -0,0 +1,27 @@
+# Rust
+target/
+**/*.rs.bk
+Cargo.lock
+
+# IDE
+.vscode/
+.idea/
+*.iml
+
+# Git
+.git/
+.gitignore
+
+# Environment
+.env
+.env.*
+*.env
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Documentation
+*.md
+!README.md
+docs/