[RESOLVED] Unknown Authentication Error in Docker Compose

I have previously encountered an unexplained authentication error in Docker Compose, which I was able to resolve, so I am writing about it.



I containerized the server with which the unit test communicates using Docker. I retrieved a set from Git, built the image using docker-compose as usual, and ran the following command to start the container.

$ docker-compose up -d --build

However, this time, an unusual log was output, and the image build process 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 functioned properly, but when I edited the Dockerfile intending to rebuild the image, I continually received the following error, preventing the build.

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


When I run it on another machine, there is no problem, so the cause is somewhere on this machine where the error occurs. So, we tried the following sequence.

  1. Delete the Docker image.
  2. Reinstall the Docker Desktop.
  3. Reset settings to default.

As a result, the last “Reset settings to default” fixed it.

How to reset settings to default settings

Do following.

Select “Troubleshoot” from the Docker icon on the menu bar.
Click the “Reset to factory defaults” button.
Troubleshoot Window
Troubleshoot Window


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Akira Hayashi (林 晃)のアバター Akira Hayashi (林 晃) Representative(代表), Software Engineer(ソフトウェアエンジニア)

アールケー開発代表。Appleプラットフォーム向けの開発を専門としているソフトウェアエンジニア。ソフトウェアの受託開発、技術書執筆、技術指導・セミナー講師。note, Medium, LinkedIn
Representative of RK Kaihatsu. Software Engineer Specializing in Development for the Apple Platform. Specializing in contract software development, technical writing, and serving as a tech workshop lecturer. note, Medium, LinkedIn