How to use test containers inside a VSCode dev container?

[yann-combarnous]

We are trying to run tests in VScode from a dev container, and are getting docker.errors.DockerException: Error while fetching server API version: ('Connection aborted.', FileNotFoundError(2, 'No such file or directory')).

What is the dev container setup to get test containers working?

[eddumelendez]

See our own devcontainer.json file

[yann-combarnous]

See our own devcontainer.json file

Thanks, adjusted our config to

	"name": "Python 3",
	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
	"image": "mcr.microsoft.com/devcontainers/python:1-3.13-bullseye",
	// Features to add to the dev container. More info: https://containers.dev/features.
	"features": {
		"ghcr.io/devcontainers-extra/features/poetry:2": {},
		"ghcr.io/devcontainers/features/java:1": {
			"version": 17,
			"installMaven": "false",
            "installGradle": "false"
		},
		"ghcr.io/devcontainers/features/node:1": {},
		"ghcr.io/devcontainers/features/git:1": {},
        "ghcr.io/devcontainers/features/github-cli:1": {},
		"ghcr.io/devcontainers/features/docker-outside-of-docker:1": {},
        "ghcr.io/devcontainers/features/sshd:1": {
            "version": "latest"
        }
	},

I could not get homebrew feature as it is not supported on arm macs.

And now getting (works on local, not in dev container)

>               Reaper._socket.connect((container_host, container_port))
E               ConnectionRefusedError: [Errno 111] Connection refused
.venv/lib/python3.13/site-packages/testcontainers/core/container.py:246: ConnectionRefusedError

for

neo4j = Neo4jContainer(image="neo4j:5.25", username="neo4j", password="########")
> neo4j.start()

Any idea of what could be missing?

[epicwhale]

how did you end up solving for this?

[yann-combarnous]

hcr.io/devcon

I used docker-in-docker feature, example:

	"name": "Python 3",
	// Or use a Dockerfile or Docker Compose file. More info: https://containers.dev/guide/dockerfile
	"image": "mcr.microsoft.com/devcontainers/python:1-3.13-bullseye",
	// Features to add to the dev container. More info: https://containers.dev/features.
	"features": {
		"ghcr.io/devcontainers-extra/features/poetry:2": {},
		"ghcr.io/devcontainers/features/java:1": {
			"version": 17,
			"installMaven": "true",
            "installGradle": "false"
		},
		"ghcr.io/devcontainers/features/node:1": {},
		"ghcr.io/devcontainers/features/git:1": {},
        "ghcr.io/devcontainers/features/github-cli:1": {},
        "ghcr.io/devcontainers/features/sshd:1": {
            "version": "latest"
        },
		"ghcr.io/devcontainers/features/docker-in-docker:2": {
            "version": "latest",
            "moby": true,
            "dockerDashComposeVersion": "v2"
         }
	},