Converting compose file fails with "invalid start character `~`" or "external networks (`proximity`) are not supported"

[Vertux]

I wanted to convert a quite simple podman compose file:

---
name: searxng
services:
  redis:
    container_name: redis
    image: docker.io/valkey/valkey:8-alpine
    command: valkey-server --save 30 1 --loglevel warning
    restart: unless-stopped
    networks:
      - searxng
    volumes:
      - ~/volumes/searxng/valkey-data2:/data
    cap_drop:
      - ALL
    cap_add:
      - SETGID
      - SETUID
      - DAC_OVERRIDE
    logging:
      driver: "json-file"
      options:
        max-size: "1m"
        max-file: "1"

  searxng:
    container_name: searxng
    image: docker.io/searxng/searxng:latest
    restart: unless-stopped
    security_opt:
      - label:disable
    networks:
      - searxng
      - proximity
    expose:
      - 8080
    volumes:
      - ~/volumes/searxng:/etc/searxng:rw
    environment:
      - SEARXNG_BASE_URL=https://${SEARXNG_HOSTNAME:-localhost}/
      - UWSGI_WORKERS=${SEARXNG_UWSGI_WORKERS:-4}
      - UWSGI_THREADS=${SEARXNG_UWSGI_THREADS:-4}
    cap_drop:
      - ALL
    cap_add:
      - CHOWN
      - SETGID
      - SETUID
    logging:
      driver: "json-file"
      options:
        max-size: "1m"
        max-file: "1"

networks:
  searxng:
  proximity:
    external: true

volumes:
  valkey-data2:

podlet compose --pod gives me this error:

Error:
   0: error converting compose file
   1: error reading compose file
   2: File `docker-compose.yaml` is not a valid compose file
   3: services.redis.volumes[0]: error parsing volume source: error parsing volume identifier: invalid start character `~`, identifiers must start with an ASCII letter (a-z, A-Z) or digit (0-9) at line 14 column 9

Location:
   src/cli/compose.rs:203

  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ BACKTRACE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   1: __libc_start_call_main<unknown>
      at <unknown source file>:<unknown line>
   2: __libc_start_main@GLIBC_2.2.5<unknown>
      at <unknown source file>:<unknown line>

Run with COLORBT_SHOW_HIDDEN=1 environment variable to disable frame filtering.
Run with RUST_BACKTRACE=full to include source snippets.

If I remove the trailing "~" just for testing, I get this error:

Error:
   0: error converting compose file
   1: error converting compose file into Quadlet files
   2: external networks (`proximity`) are not supported

Location:
   src/cli/compose.rs:384

  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ BACKTRACE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   1: __libc_start_call_main<unknown>
      at <unknown source file>:<unknown line>
   2: __libc_start_main@GLIBC_2.2.5<unknown>
      at <unknown source file>:<unknown line>

Run with COLORBT_SHOW_HIDDEN=1 environment variable to disable frame filtering.
Run with RUST_BACKTRACE=full to include source snippets.

[Vertux]

I guess the second error is related to #95 - I would be grateful if you would reconsider your position on external networks.

[ebugusey]

I also want to add that currently env variables in volumes are not supported. Like I want to allow certain container to access my entire home directory but it's not currently possible to do it with podlet, even though it's possible to do it with podman-compose.

Example:

services:
  sync:
    image: docker.io/syncthing/syncthing
    volumes:
      - $HOME:/home/deck

will throw:

Error:
   0: error converting compose file
   1: error reading compose file
   2: File `docker-compose.yml` is not a valid compose file
   3: services.sync.volumes[0]: error parsing volume source: error parsing volume identifier: invalid start character `$`, identifiers must start with an ASCII letter (a-z, A-Z) or digit (0-9) at line 6 column 9

Location:
   src/cli/compose.rs:203

[thekief]

@k9withabone could you give some insight why no support for external networks is planned, as you said in #95? I'm fully aware that this is likely some headache for you to implement.

Having an override to ignore unsupported options like these would be nice to allow to generate the rest of the quadlet file.