[BUG] docker-compose does not load ~/.docker/config.json

[stanicek]

Description

I want the docker-compose to behave the same as the docker command. In this case it is to load all the configuration by default from ~/.docker/config.json.

At the moment docker-compose won't do that by default. When there's an environment variable DOCKER_CONFIG, docker-compose respects its content, e.g. DOCKER_CONFIG=~/.docker; docker-compose build works.

Can you use the default value (~/.docker/config.json) when the DOCKER_CONFIG variable is not set to align with docker executable behaviour? Thoughts?

Steps To Reproduce

1. Create a project with Dockerfile and docker-compose.yaml Dockerfile

FROM container-registry.oracle.com/os/oraclelinux:8-slim
RUN microdnf install nc

docker-compose.yaml

services:
  mycontainer:
    build: .
    container_name: mycontainer

2. Configure for example proxy variable in ~/.docker/config.json, pointing to a proxy server.

"proxies": {
  "default": {
    "httpProxy": "nonexistingproxy.com:80"
  }
}

3. run docker build ./ Docker commands respect the config.json by default and fails installing the package on non-existing proxy unavailability.
4. run docker-compose build Docker-compose does not respect config.json => image is build succesfully => didn't respect the proxy settings in config.json
5. run DOCKER_CONFIG=~/.docker; docker-compose build => image build fails => proxy settings were respected.

• make sure you remove cached images between each command.

Compose Version

❯ docker compose version
Docker Compose version 2.20.3
❯ docker-compose version
Docker Compose version 2.20.3

Docker Environment

Client:r info
 Version:    24.0.2-rd
 Context:    rancher-desktop
 Debug Mode: false
 Plugins:
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.11.0
    Path:     /Users/.../.docker/cli-plugins/docker-buildx
  compose: Docker Compose (Docker Inc.)
    Version:  2.20.3
    Path:     /Users/.../.docker/cli-plugins/docker-compose
  dev: Docker Dev Environments (Docker Inc.)
    Version:  v0.0.5
    Path:     /Users/.../.docker/cli-plugins/docker-dev
  extension: Manages Docker extensions (Docker Inc.)
    Version:  v0.2.17
    Path:     /Users/.../.docker/cli-plugins/docker-extension
  sbom: View the packaged-based Software Bill Of Materials (SBOM) for an image (Anchore Inc.)
    Version:  0.6.0
    Path:     /Users/.../.docker/cli-plugins/docker-sbom
  scan: Docker Scan (Docker Inc.)
    Version:  v0.23.0
    Path:     /Users/.../.docker/cli-plugins/docker-scan

Server:
 Containers: 2
  Running: 0
  Paused: 0
  Stopped: 2
 Images: 20
 Server Version: 23.0.6
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Using metacopy: false
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Cgroup Version: 1
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 1fbd70374134b891f97ce19c70b6e50c7b9f4e0d
 runc version: 860f061b76bb4fc671f0f9e900f7d80ff93d4eb7
 init version: 
 Security Options:
  seccomp
   Profile: builtin
 Kernel Version: 6.1.30-0-virt
 Operating System: Alpine Linux v3.18
 OSType: linux
 Architecture: aarch64
 CPUs: 4
 Total Memory: 5.79GiB
 Name: lima-rancher-desktop
 ID: ...
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 HTTP Proxy: http://something
 HTTPS Proxy: http://something
 No Proxy: something
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Live Restore Enabled: false

Anything else?

No response

[milas]

You might be running into #10902 in v2.20.3, which regressed when fixing proxy handling for a different issue 😓

But in general, Compose does respect ~/.docker/config.json.

~/.docker/config.json`

{
	"auths": {},
	"credsStore": "desktop",
	"proxies": {
		"default": {
			"httpProxy": "insecure.proxy.localhost:80",
			"httpsProxy": "secure.proxy.localhost:80",
			"noProxy": "127.0.0.1"
		}
	},
	"currentContext": "desktop-linux",
}

Dockerfile

FROM alpine

RUN env | grep -i proxy && false

Build with docker compose build --no-cache:

 > [mycontainer 2/2] RUN env | grep -i proxy && false:
0.100 HTTPS_PROXY=secure.proxy.localhost:80
0.100 no_proxy=127.0.0.1
0.100 NO_PROXY=127.0.0.1
0.100 https_proxy=secure.proxy.localhost:80
0.100 http_proxy=insecure.proxy.localhost:80
0.100 HTTP_PROXY=insecure.proxy.localhost:80

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