`podman-compose ps` does not accept service as parameter

[adelton]

Is your feature request related to a problem? Please describe.

When attempting to extend CI workflow that works with docker-compose to also run with podman-compose, any incompatibility and missing options on podman-compose side lead to wasted time coming up with workarounds.

Describe the solution you'd like

To check if a service is running, I'd like to be able to specify service name as a parameter to podman-compose ps, as I can do with docker-compose ps:

$ docker-compose ps --help
Usage:  docker compose ps [OPTIONS] [SERVICE...]
[...]
$ docker-compose up -d
[+] Running 3/3
 ✔ Network test-docker-compose_default         Created                     0.1s 
 ✔ Container test-docker-compose-frontend-2-1  Started                     0.3s 
 ✔ Container test-docker-compose-frontend-1-1  Started                     0.3s 
$ docker-compose ps frontend-1
NAME                               IMAGE                     COMMAND                  SERVICE      CREATED          STATUS         PORTS
test-docker-compose-frontend-1-1   docker.io/library/nginx   "/docker-entrypoint.…"   frontend-1   10 seconds ago   Up 9 seconds   0.0.0.0:8081->80/tcp, [::]:8081->80/tcp

Currently (with podman-compose 1.5.0) I get

$ podman-compose ps frontend-1
usage: podman-compose [-h] [-v] [--in-pod in_pod] [--pod-args pod_args]
                      [--env-file env_file] [-f file] [--profile profile]
                      [-p PROJECT_NAME] [--podman-path PODMAN_PATH]
                      [--podman-args args] [--podman-pull-args args]
                      [--podman-push-args args] [--podman-build-args args]
                      [--podman-inspect-args args] [--podman-run-args args]
                      [--podman-start-args args] [--podman-stop-args args]
                      [--podman-rm-args args] [--podman-volume-args args]
                      [--no-ansi] [--no-cleanup] [--dry-run]
                      [--parallel PARALLEL] [--verbose]
                      {help,version,wait,systemd,pull,push,build,up,down,ps,run,exec,start,stop,restart,logs,config,port,pause,unpause,kill,stats,images} ...
podman-compose: error: unrecognized arguments: frontend-1

Describe alternatives you've considered

My current approach is

$ podman-compose ps --format json | jq -r --arg service frontend-1 '.[].Labels["com.docker.compose.service"] | select(. == $service)'

which is quite a mounthful. Plus the fact that the JSON output of podman-compose vastly differs from the one of docker-compose makes that approach not compatible with docker-compose either.

Additional context

I'm currently hitting this incompatibility when working on https://github.com/adelton/webauthinfra.