Question 1

What is Docker Compose?

Accepted Answer

Docker Compose is a tool for defining and running multi-container Docker applications. You describe your services, networks, and volumes in a YAML file (docker-compose.yml), then start everything with "docker compose up".

Question 2

Do I need the version field?

Accepted Answer

Since Docker Compose V2, the version field is optional and mostly ignored. Leave it empty unless you need compatibility with older Docker versions. The generator omits it by default for modern setups.

Question 3

How do I add named volumes?

Accepted Answer

When you use a volume like "pg-data:/var/lib/postgresql/data", the generator automatically detects named volumes (anything that does not start with ./ or /) and adds them to the volumes section at the bottom of the file.

Question 4

Can I use custom Dockerfiles?

Accepted Answer

The generator focuses on image-based services. For custom builds, replace the image field with a build context in the generated YAML: remove the "image:" line and add "build: ./path-to-dockerfile" instead.

Docker Compose Generator

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Services

docker-compose.yml

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