I have previously encountered an unexplained authentication error in Docker Compose, which I was able to resolve, so I am writing about it.
Condition
I containerized the server with which the unit test communicates using Docker. I got a set from Git, built the image with docker-compose
as usual, and ran the following to run the container.
docker-compose up -d --build
This time, however, a strange log was output and the image build was aborted. The environment had been running without error the whole time, but something must have happened. I entered the following to run the container without building the image, and the container ran without problems.
docker-compose up -d
Image build fails
The container ran and worked fine, but when I edited the Dockerfile
and wanted to rebuild the image, I kept getting the following error and could not build it.
Creating network "unittestmockserver_default" with the default driver
Building nginx
Traceback (most recent call last):
File "docker-compose", line 6, in
File "compose/cli/main.py", line 72, in main
File "compose/cli/main.py", line 128, in perform_command
File "compose/cli/main.py", line 1077, in up
File "compose/cli/main.py", line 1073, in up
File "compose/project.py", line 548, in up
File "compose/service.py", line 351, in ensure_image_exists
File "compose/service.py", line 1106, in build
File "site-packages/docker/api/build.py", line 261, in build
File "site-packages/docker/api/build.py", line 308, in _set_auth_headers
File "site-packages/docker/auth.py", line 311, in get_all_credentials
File "site-packages/docker/auth.py", line 262, in _resolve_authconfig_credstore
File "site-packages/docker/auth.py", line 287, in _get_store_instance
File "site-packages/docker/credentials/store.py", line 25, in __init__
docker.credentials.errors.InitializationError: docker-credential-gcloud not installed or not available in PATH
[7430] Failed to execute script docker-compose
Troubleshooting
When I run it on another machine, there is no problem, so the cause is somewhere on this machine where the error occurs. We tried the following sequence.
- Delete the
Docker
image. - Reinstall the
Docker Desktop
. - Reset settings to default.
As a result, the last “Reset settings to default” fixed it.
How to reset settings to default settings
Do following.

