Error: --platform or --push not supported w/dockerComposeFile #404

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1. Christof Marti (chrmarti)

   added

   feature-requestNew feature or requestNew feature or request

   on Feb 20, 2023
2. eduardolat commented on Feb 3, 2025

   

   Luis Eduardo (eduardolat)

   on Feb 3, 2025

   More actions

   +1
3. AlexKeySmith commented on Jul 1, 2025

   

   Alex KeySmith (AlexKeySmith)

   on Jul 1, 2025

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   I've noticed the feature request tag being added, I presume this means that docker compose based devcontainers aren't able to be built for separate platforms? It would be helpful for readers to be able to understand the constraints and alternative approaches.
4. kverbyob commented on May 13, 2026

   

   Kristof (kverbyob)

   on May 13, 2026

   More actions

   I also hit this issue and can confirm that multi-arch devcontainer builds only work with a Dockerfile, not a Docker Compose file.
   A workaround I used to pre-build multi-arch dev containers in my CI/CD pipeline was to convert the compose config to a dedicated devcontainer-ci.json file that references this Dockerfile.

   A code snippet that can get you started:

   #!/bin/bash
   
   COMPOSE_BUILD=".devcontainer/docker-compose.build.yml"
   CI_CONFIG=".devcontainer/devcontainer.ci.json"
   
   yq -o=json '.services.devcontainer.build' "$COMPOSE_BUILD" \
   | jq '{
       build: (
           {
               dockerfile: (.dockerfile | split("/") | last),
               context:    .context,
               args:       ([.args | to_entries[] | {(.key): "${localEnv:\(.key)}"}] | add // {})
           }
           + if .network then {options: ["--network=\(.network)"]} else {} end
       )
   }' > "$CI_CONFIG"