Docker Antipattern Detection

Analyze Dockerfiles for antipatterns causing bloated images, poor caching, and unreliable builds.

Antipattern Catalog

1. COPY Before Dependency Install

# BAD: Cache busted on every code change
COPY . /var/www/html
RUN composer install --no-dev

# GOOD: Dependencies first, source second
COPY composer.json composer.lock /var/www/html/
RUN composer install --no-dev --no-scripts --no-autoloader
COPY . /var/www/html
RUN composer dump-autoload --optimize