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docker

ERROR: build path X either does not exist, is not accessible, or is not a valid URL

Docker Compose can't find the build context for a service. The build context is the directory that contains the Dockerfile and the files to be copied into the image, and the path specified in docker-compose.yml under build: doesn't point to a valid location.

Common causes

  • The build context path in docker-compose.yml is wrong or relative to the wrong directory
  • A microservices Compose file referencing sibling directories that don't exist in the current checkout
  • The service directory was renamed or moved without updating docker-compose.yml
  • Running docker-compose up from a subdirectory instead of the project root

How to fix it

  1. Verify the path in docker-compose.yml matches the actual directory structure
  2. Run docker-compose from the directory containing docker-compose.yml, not a subdirectory
  3. Use relative paths from the Compose file location: build: ./services/api
  4. Specify both context and dockerfile: build: { context: ./api, dockerfile: Dockerfile.prod }

Example

$ docker-compose up --build ERROR: build path /projects/app/services/api either does not exist, is not accessible, or is not a valid URL.

The services/api directory doesn't exist at the path docker-compose.yml expects

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