mirror of
https://github.com/coder/coder.git
synced 2026-06-03 13:08:25 +00:00
Ben Potter
cfce751b8a
Improves the Docker daemon troubleshooting in the quickstart and Docker install docs: - Renames the quickstart entry from "Cannot connect to the Docker daemon on Linux" to cover all platforms. - Adds a plain-English explanation of what the error means (Docker is not installed or not running). - Adds tabbed macOS/Linux/Windows instructions to the quickstart (macOS and Windows were missing). - Simplifies the Linux steps to match what Step 1 of the quickstart already teaches. - Adds a matching entry to `docs/install/docker.md` with a cross-link to the quickstart for platform-specific steps. Supersedes #24907 which was closed without merging. Fixes https://linear.app/codercom/issue/DEVREL-23 > Generated with [Coder Agents](https://coder.com/agents)
142 lines
4.7 KiB
Markdown
142 lines
4.7 KiB
Markdown
# Install Coder via Docker
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You can install and run Coder using the official Docker images published on
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[GitHub Container Registry](https://github.com/coder/coder/pkgs/container/coder).
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## Requirements
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- Docker. See the
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[official installation documentation](https://docs.docker.com/install/).
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- A Linux machine. For macOS devices, start Coder using the
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[standalone binary](./cli.md).
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- 2 CPU cores and 4 GB memory free on your machine.
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<div class="tabs">
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## Install Coder via `docker compose`
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Coder publishes a
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[docker compose example](https://github.com/coder/coder/blob/main/compose.yaml)
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which includes a PostgreSQL container and volume.
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1. Make sure you have [Docker Compose](https://docs.docker.com/compose/install/)
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installed.
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1. Download the
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[`docker-compose.yaml`](https://github.com/coder/coder/blob/main/compose.yaml)
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file.
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1. Update `group_add:` in `docker-compose.yaml` with the `gid` of `docker`
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group. You can get the `docker` group `gid` by running the below command:
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```shell
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getent group docker | cut -d: -f3
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```
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1. Start Coder with `docker compose up`
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1. Visit the web UI via the configured url.
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1. Follow the on-screen instructions log in and create your first template and
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workspace
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Coder configuration is defined via environment variables. Learn more about
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Coder's [configuration options](../admin/setup/index.md).
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## Install Coder via `docker run`
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### Built-in database (quick)
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For proof-of-concept deployments, you can run a complete Coder instance with the
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following command.
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```shell
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export CODER_DATA=$HOME/.config/coderv2-docker
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export DOCKER_GROUP=$(getent group docker | cut -d: -f3)
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mkdir -p $CODER_DATA
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docker run --rm -it \
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-v $CODER_DATA:/home/coder/.config \
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-v /var/run/docker.sock:/var/run/docker.sock \
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--group-add $DOCKER_GROUP \
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ghcr.io/coder/coder:latest
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```
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### External database (recommended)
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For production deployments, we recommend using an external PostgreSQL database
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(version 13 or higher). Set `CODER_ACCESS_URL` to the external URL that users
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and workspaces will use to connect to Coder.
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```shell
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export DOCKER_GROUP=$(getent group docker | cut -d: -f3)
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docker run --rm -it \
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-e CODER_ACCESS_URL="https://coder.example.com" \
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-e CODER_PG_CONNECTION_URL="postgresql://username:password@database/coder" \
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-v /var/run/docker.sock:/var/run/docker.sock \
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--group-add $DOCKER_GROUP \
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ghcr.io/coder/coder:latest
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```
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</div>
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## Install the preview release
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> [!TIP]
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> We do not recommend using preview releases in production environments.
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You can install and test a
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[preview release of Coder](https://github.com/coder/coder/pkgs/container/coder-preview)
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by using the `coder-preview:latest` image tag.
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This image is automatically updated with the latest changes from the `main` branch.
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Replace `ghcr.io/coder/coder:latest` in the `docker run` command in the
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[steps above](#install-coder-via-docker-run) with `ghcr.io/coder/coder-preview:latest`.
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## Troubleshooting
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### Cannot connect to the Docker daemon
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If you see an error like:
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```text
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Error: Error pinging Docker server: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
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```
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Docker is not installed or not running on the host. Install Docker and start the
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daemon before creating a workspace from a Docker-based template. Refer to the
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[quickstart troubleshooting](../tutorials/quickstart.md#cannot-connect-to-the-docker-daemon)
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for platform-specific steps.
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### Docker-based workspace is stuck in "Connecting..."
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Ensure you have an externally-reachable `CODER_ACCESS_URL` set. See
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[troubleshooting templates](../admin/templates/troubleshooting.md) for more
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steps.
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### Permission denied while trying to connect to the Docker daemon socket
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See Docker's official documentation to
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[Manage Docker as a non-root user](https://docs.docker.com/engine/install/linux-postinstall/#manage-docker-as-a-non-root-user)
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### I cannot add Docker templates
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Coder runs as a non-root user, we use `--group-add` to ensure Coder has
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permissions to manage Docker via `docker.sock`. If the host systems
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`/var/run/docker.sock` is not group writable or does not belong to the `docker`
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group, the above may not work as-is.
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### I cannot add cloud-based templates
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In order to use cloud-based templates (e.g. Kubernetes, AWS), you must have an
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external URL that users and workspaces will use to connect to Coder. For
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proof-of-concept deployments, you can use
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[Coder's tunnel](../admin/setup/index.md#tunnel). For production deployments, we
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recommend setting an [access URL](../admin/setup/index.md#access-url)
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## Next steps
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- [Create your first template](../tutorials/template-from-scratch.md)
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- [Control plane configuration](../admin/setup/index.md#configure-control-plane-access)
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