This change adds support for devcontainer autostart in workspaces. The preconditions for utilizing this feature are:

1. Thecoder_devcontainer resource must be defined in Terraform
2. By the time the startup scripts have completed,
   • The@devcontainers/cli tool must be installed
   • The given workspace folder must contain a devcontainer configuration

Example Terraform:

resource"coder_devcontainer""coder" {agent_id=coder_agent.main.idworkspace_folder="/home/coder/coder"config_path=".devcontainer/devcontainer.json"# (optional)}

Closes#16423

Demo of an auto-started Dev Container (logs, timings):

Demo of devcontainer defined in Terraform, but not enabled on the agent:

Demo of errors being propagated via script: