diff --git a/.dockerignore b/.dockerignore
index af8406ff..6607964e 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -13,3 +13,77 @@ settings.json
 *.export
 .devcontainer
 user_scripts/dist
+backlog
+
+# Test directories (not needed in production)
+spec
+test
+
+# Development and CI/CD files
+.github
+.ruby-lsp
+.aider*
+.cursorignore
+.cursorrules
+.rspec
+.rspec_parallel
+.rubocop.yml
+.prettierrc
+TODO.md
+*.notes.md
+things-to-fix.notes.md
+mf-fitter-commands.notes.md
+.aiderignore
+
+# Sorbet type checking files (not needed in production)
+sorbet
+
+# Storage directory (contains uploaded files/cache)
+storage
+
+# Development database files
+db/*.sqlite3
+db/*.sqlite3-*
+
+# Core dump files
+core
+
+# Yarn/npm cache and lock files that might conflict
+yarn-error.log
+yarn-debug.log*
+.yarn-integrity
+package-lock.json
+
+# OS specific files
+.DS_Store
+Thumbs.db
+
+# Editor specific files
+*.swp
+*.swo
+*~
+
+# Local environment files
+.env.local
+.env.*.local
+
+# Compiled assets (will be rebuilt in Docker)
+public/assets
+public/packs
+public/packs-test
+app/assets/builds/*
+
+# Flame graph files
+flamegraph.svg
+
+# Procfile variants (only need production one)
+Procfile.dev
+Procfile.dev-static
+Procfile.staging
+Procfile.worker
+
+# Development scripts
+justfile
+
+# Documentation
+README.md