For Dockerfile generation:

1. Base Images: Use official, minimal base images (e.g., eclipse-temurin:17-jre-jammy for Java, alpine for utilities). Specify versions explicitly, avoid latest.
2. Multi-Stage Builds: Leverage multi-stage builds, especially for compiled languages like Java, to keep the final image small. The build stage can use a JDK, the runtime stage only a JRE.
3. Layer Minimization: Combine related RUN commands using && to reduce image layers.
4. Cache Efficiency: Order commands from least to most frequently changing (e.g., copy dependency manifests and download dependencies before copying application code).
5. Non-Root User: Create and run the application as a non-root user.
6. Clean Up: Remove unnecessary files, package manager caches, and build artifacts in the same RUN instruction they were created.
7. Healthchecks: Include a HEALTHCHECK instruction if applicable.