If you are getting an error like the following with docker-compose
:
Traceback (most recent call last): File "docker-compose", line [...], in <module> File "compose/cli/main.py", line [...], in main File "compose/cli/main.py", line [...], in perform_command File "compose/metrics/decorator.py", line [...], in wrapper File "compose/cli/main.py", line [...], in up File "compose/cli/main.py", line [...], in up File "compose/project.py", line [...], in up File "compose/service.py", line [...], in ensure_image_exists File "compose/service.py", line [...], in build File "compose/service.py", line [...], in build File "docker/api/build.py", line [...], in build TypeError: You must specify a directory to build in path [...] Failed to execute script docker-compose
It is likely that a custom/alternate name for the Dockerfile
is specified in the docker-compose.yml
build
configuration, for example, like so:
# ... services: example-service: build: ./Dockerfile.dev # ...
This does not work because the build
configuration only expects a string path to the build
context
(i.e. the directory in which the Dockerfile
is located) excluding the Dockerfile
name. To fix the issue, you need to specify the build
configuration as an object instead, with:
- The path specified under "
context
", and; - The custom/alternate name of the
Dockerfile
under "dockerfile
".
For example:
# ... services: example-service: build: context: . dockerfile: Dockerfile.dev # ...
In addition, if the Dockerfile
is located on an external resource or a network drive, and the problem persists for you, then simply moving/downloading it to your local environment and then referencing the file should solve your issue.
This post was published (and was last revised ) by Daniyal Hamid. Daniyal currently works as the Head of Engineering in Germany and has 20+ years of experience in software engineering, design and marketing. Please show your love and support by sharing this post.