[BUG] Compose STILL does not observe the BUILDKIT_PROGRESS environement variable #13088
Description
Description
Buildkit provides ways of configure non-pretty (plain) build progress output through either a runtime flag (--progress=plain) or via an environment variable (BUILDKIT_PROGRESS=plain). Compose currently ignores the environment variable.
Support for the environment variable was supposed to be added in #12458 (released in Compose v2.33.0). This didn't work, and was then supposed to be fixed in #12894 (released in Compose v2.37.0). This again does not seem to work.
Steps To Reproduce
- Run a Compose stack using the
BUILDKIT_PROGRESS=plainenvironment variable:BUILDKIT_PROGRESS=plain docker compose up
- Expected output: plaintext build and stack output, equivalent to running Compose with the
--progress=plainflag. - Actual output: pretty output with paging, colors, and multiple output streams writing to the terminal at the same time.
Compose Version
$> docker-compose version && docker compose version
Docker Compose version 2.38.2
Docker Compose version 2.38.2
Docker Environment
Client: Docker Engine - Community
Version: 28.3.2
Context: default
Debug Mode: false
Plugins:
buildx: Docker Buildx (Docker Inc.)
Version: v0.26.1
Path: /opt/homebrew/lib/docker/cli-plugins/docker-buildx
compose: Docker Compose (Docker Inc.)
Version: 2.38.2
Path: /opt/homebrew/lib/docker/cli-plugins/docker-compose
Server:
Containers: 5
Running: 0
Paused: 0
Stopped: 5
Images: 126
Server Version: 27.4.0
Storage Driver: overlay2
Backing Filesystem: extfs
Supports d_type: true
Using metacopy: false
Native Overlay Diff: true
userxattr: false
Logging Driver: json-file
Cgroup Driver: cgroupfs
Cgroup Version: 2
Plugins:
Volume: local
Network: bridge host ipvlan macvlan null overlay
Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
Swarm: inactive
Runtimes: io.containerd.runc.v2 runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 88bf19b2105c8b17560993bee28a01ddc2f97182
runc version: v1.2.2-0-g7cb3632
init version: de40ad0
Security Options:
apparmor
seccomp
Profile: builtin
cgroupns
Kernel Version: 6.8.0-62-generic
Operating System: Ubuntu 24.04.2 LTS
OSType: linux
Architecture: aarch64
CPUs: 6
Total Memory: 15.58GiB
Name: colima
ID: 89601753-b543-4b7b-b5d6-b538bfa0ec99
Docker Root Dir: /var/lib/docker
Debug Mode: true
File Descriptors: 34
Goroutines: 76
System Time: 2025-07-23T11:26:33.205427892-07:00
EventsListeners: 0
Experimental: false
Insecure Registries:
127.0.0.0/8
Live Restore Enabled: false
Anything else?
This issue is effectively a re-opening/duplicate of issue 12457.