Non-Comprehensive Guide to Writing Dockerfiles

0. Docker Layers & Image Size

1. 5 Stages

2. ENTRYPOINT vs CMD

envsubst nginx

3. Alpine Linux - Small but Mighty

4. Dockerfile linter

Hadolint Homepage List of supported rules

5. pid1 and hanging processes

Docker and the PID 1 zombie reaping problem dumb-init and tini

6. Phantom Volumes

What is the purpose of VOLUME in Dockerfile Avoid using VOLUME?

7. Single Dockerfile for Development&Production