Docker for developers: just enough to save your sanity

Docker kills the classic 'it works on my machine' by packaging the environment together with the code.

# Thin images, fast builds

Pick a light base image, leverage layer caching, and use .dockerignore to build faster and ship leaner.

# Compose for local envs

docker-compose spins up databases, caches, and side services so the whole team shares one environment with a single command.

• Never bake secrets into images
• Split build and runtime stages
• Add health checks to services

Good containers turn 'setting up the environment' into a single command.