docker compose - unauthorized: unauthorized to access repository - docker

Question

I'm having issues using docker compose with private repositories.
Looking for similar issues i can't get --verbose to give any meaningful output, to help debugging the issue.
When i use docker compose to pull images from a private registry i receive the error:
"Error response from daemon: unauthorized: unauthorized to access
repository: myrepo/myservice, action: pull: unauthorized to access
repository: myrepo/myservice, action: pull"
I've made sure to run the docker login command, before running docker compose up.
If i run docker pull on the image described in the compose file, the image is downloaded as expected, but running docker compose up fails.
i'm using docker for windows.
docker compose version 2.13.
docker version:
PS C:\Users\kov\source\repos\localsetup> docker version
Client:
Cloud integration: v1.0.29
Version: 20.10.21
API version: 1.41
Go version: go1.18.7
Git commit: baeda1f
Built: Tue Oct 25 18:08:16 2022
OS/Arch: windows/amd64
Context: default
Experimental: true
Server: Docker Desktop 4.15.0 (93002)
Engine:
Version: 20.10.21
API version: 1.41 (minimum version 1.12)
Go version: go1.18.7
Git commit: 3056208
Built: Tue Oct 25 18:00:19 2022
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.6.10
GitCommit: 770bd0108c32f3fb5c73ae1264f7e503fe7b2661
runc:
Version: 1.1.4
GitCommit: v1.1.4-0-g5fd4c4d
docker-init:
Version: 0.19.0
GitCommit: de40ad0
my docker compose file:
services:
appRestApiEndpoint:
image: myregistry.io/repo/app-rest-api-endpoint
container_name: my-service
ports:
- 5000:80
networks:
- backend
environment:
- ASPNETCORE_ENVIRONMENT=myEnvVariable
networks:
backend:

Answer 1

I can provide you with the following solution / workaround, though I'm not sure if this is the "wanted" behavior of docker-compose or a bug; see the link I mentioned above.
Create the following config file
For Linux I know the file is: ~/.docker/config.json
For Windows it might be similar to C:\Users\<username>\.docker\config.json
Example for Docker Hub registry:
{
"auths": {
"https://index.docker.io/v1/": {
"auth": "<auth-string>"
}
}
}
<auth-string> is the base64-encoded string: <docker-loginname>:<auth-token>. The <auth-token> can be generated by logging into docker hub.
Example for Harbor docker registry:
{
"auths": {
"<harbor-url": {
"auth": "<auth-string>"
}
}
}
<auth-string> is base64(<loginname>:<password>)