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coder/docs/admin/git-providers.md
2023-03-28 17:11:30 -05:00

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Git Providers

Coder integrates with git providers so developers can authenticate with repositories within their workspace.

How it works

When developers use git inside their workspace, they are first prompted to authenticate. After that, Coder will store/refresh tokens for future operations.

Configuration

To add a git provider, you'll need to create an OAuth application. The following providers are supported:

Example callback URL: https://coder.example.com/gitauth/primary-github/callback. Use an arbitrary ID for your provider (e.g. primary-github).

Set the following environment variables to configure the Coder server:

CODER_GITAUTH_0_ID="primary-github"
CODER_GITAUTH_0_TYPE=github|gitlab|azure-devops|bitbucket
CODER_GITAUTH_0_CLIENT_ID=xxxxxx
CODER_GITAUTH_0_CLIENT_SECRET=xxxxxxx

GitHub Enterprise

GitHub Enterprise requires the following authentication and token URLs:

CODER_GITAUTH_0_VALIDATE_URL="https://github.example.com/login/oauth/access_token/info"
CODER_GITAUTH_0_AUTH_URL="https://github.example.com/login/oauth/authorize"
CODER_GITAUTH_0_TOKEN_URL="https://github.example.com/login/oauth/access_token"

Self-managed git providers

Custom authentication and token URLs should be used for self-managed Git provider deployments.

CODER_GITAUTH_0_AUTH_URL="https://github.example.com/oauth/authorize"
CODER_GITAUTH_0_TOKEN_URL="https://github.example.com/oauth/token"
CODER_GITAUTH_0_VALIDATE_URL="https://your-domain.com/oauth/token/info"

Custom scopes

Optionally, you can request custom scopes:

CODER_GITAUTH_0_SCOPES="repo:read repo:write write:gpg_key"

Multiple git providers (enterprise)

Multiple providers are an Enterprise feature. Learn more.

A custom regex can be used to match a specific repository or organization to limit auth scope. Here's a sample config:

# Provider 1) github.com
CODER_GITAUTH_0_ID=primary-github
CODER_GITAUTH_0_TYPE=github
CODER_GITAUTH_0_CLIENT_ID=xxxxxx
CODER_GITAUTH_0_CLIENT_SECRET=xxxxxxx
CODER_GITAUTH_0_REGEX=github.com/orgname

# Provider 2) github.example.com
CODER_GITAUTH_1_ID=secondary-github
CODER_GITAUTH_1_TYPE=github
CODER_GITAUTH_1_CLIENT_ID=xxxxxx
CODER_GITAUTH_1_CLIENT_SECRET=xxxxxxx
CODER_GITAUTH_1_REGEX=github.example.com
CODER_GITAUTH_1_AUTH_URL="https://github.example.com/login/oauth/authorize"
CODER_GITAUTH_1_TOKEN_URL="https://github.example.com/login/oauth/access_token"
CODER_GITAUTH_1_VALIDATE_URL="https://github.example.com/login/oauth/access_token/info"

To support regex matching for paths (e.g. github.com/orgname), you'll need to add this to the Coder agent startup script:

git config --global credential.useHttpPath true

Require git authentication in templates

If your template requires git authentication (e.g. running git clone in the startup_script), you can require users authenticate via git prior to creating a workspace:

Git authentication in template

The following example will require users authenticate via GitHub and auto-clone a repo into the ~/coder directory.

data "coder_git_auth" "github" {
  # Matches the ID of the git auth provider in Coder.
  id = "github"
}

resource "coder_agent" "dev" {
  os   = "linux"
  arch = "amd64"
  dir  = "~/coder"
  env = {
    GITHUB_TOKEN : data.coder_git_auth.github.access_token
  }
  startup_script = <<EOF
if [ ! -d ~/coder ]; then
    git clone https://github.com/coder/coder
fi
EOF
}

See the Terraform provider documentation for all available options.