refactor: simplify registry to basic setup

- Reduce to only registry:2 image
- Remove unnecessary configuration files
- Add basic .gitignore and env.example
- Keep only essential docker-compose configuration

Dockerfile

@@ -1,16 +0,0 @@
-FROM registry:2
-
-# Install Apache utilities for htpasswd management
-RUN apt-get update && apt-get install -y \
-    apache2-utils \
-    && rm -rf /var/lib/apt/lists/*
-
-# Create auth directory
-RUN mkdir -p /etc/docker/registry/auth
-
-# Copy custom entrypoint script
-COPY entrypoint.sh /usr/local/bin/
-RUN chmod +x /usr/local/bin/entrypoint.sh
-
-ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]
-CMD ["/etc/docker/registry/config.yml"]