Reproduction steps

1.Use a docker-compose file
services:
django: &django
build:
context: .
dockerfile: ./compose/local/django/Dockerfile
image: djfactory_local_django
container_name: djfactory_local_django
depends_on:
- postgres
- redis
- mailpit
volumes:
- djfactory_venv:/app/.venv
- .:/app

env_file:
  - ./.envs/.local/.django
  - ./.envs/.local/.postgres
ports:
  - "8000:8000"
command: /start

2. Run devcontainer in Zed

Current vs. Expected behavior

Expected behavior:
Zed should accept any Docker Compose configuration that is valid according to Docker Compose spec.

Actual behavior:

Zed fails with errors like:

Error deserializing from raw json:
invalid type: map, expected a string

and:

missing field source

Additional context:

Running docker compose config --format json produces valid output
"volumes": [
{
"type": "volume",
"source": "djfactory_venv",
"target": "/app/.venv",
"volume": {}
},
{
"type": "bind",
"source": "/Volumes/WindowsDD/pyproject/djfactory/djfactory",
"target": "/app",
"bind": {
"create_host_path": true
}
}
]
The issue seems to come from Zed's JSON deserialization expecting something else

Impact:

This prevents using:

advanced volume configurations
bind options like create_host_path
production-like compose setups

Suggested fix:

Zed devcontainer parser should support the full Docker Compose spec, including long-form volume definitions.

Zed version and system specs

Zed: v0.231.1+stable.213.e71b6aa44ffaac9bdaf986288289359e6f1b3572 (Zed)
OS: macOS 13.6.4
Memory: 8 GiB
Architecture: x86_64

Docker version 27.4.0, build bde2b89
Docker Compose version v2.31.0-desktop.2

Attach Zed log file

2026-04-09T07:01:41+05:45 ERROR [dev_container::command_json] Error running command Command { program: "docker", args: ["compose", "-f", "/Volumes/WindowsDD/pyproject/djfactory/djfactory/.devcontainer/../docker-compose.local.yml", "config", "--format", "json"], envs: {}, env_clear: false, current_dir: None, stdin_cfg: Some(Null), stdout_cfg: Some(Piped), stderr_cfg: Some(Piped), kill_on_drop: false }: Error deserializing from raw json: missing field `source` at line 55 column 9
2026-04-09T07:01:41+05:45 ERROR [recent_projects::remote_servers] Failed to start dev container: DevContainerUpFailed("Failed with nested error: CommandFailed(\"docker\")")

Relevant Zed settings

Relevant Keymap

(for AI issues) Model provider details

No response

If you are using WSL on Windows, what flavor of Linux are you using?

None