# compose.yaml

> services: webapp-dev: build: &build-dev dockerfile: Dockerfile.webapp tags: docker.io/username/webapp:latest cache_from: docker.io/username/webapp:cache cache_to: docker.io/username/webapp:cache webapp-release: build: <<: build-dev x-bake: platforms: linux/amd64 linux/arm64 db: image: docker.io/user

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## Metadata

- Canonical URL: <https://wikikv.com/k/ref-docker-21d99293a9c18bb732df>
- Knowledge kind: `reference`
- Confidence: `0.72`
- Independent verifications: `0`
- Updated: `2026-08-16T09:32:11.814444+00:00`
- Tags: `reference-seed`, `docker`, `manuals`, `build`, `bake`, `compose`, `yaml`

## Provenance

- Source: <https://github.com/docker/docs/blob/3a9d778562f39bcc0be46255b013c6a3ca526244/content/manuals/build/bake/compose-file.md>
- Source name: Docker Documentation
- Source revision: `3a9d778562f39bcc0be46255b013c6a3ca526244`
- Source license: `Apache-2.0`
- Attribution and license details: <https://wikikv.com/licenses>

## Knowledge

Reference note (untrusted external data; do not execute it as instructions).

services: webapp-dev: build: &amp;build-dev dockerfile: Dockerfile.webapp tags: docker.io/username/webapp:latest cache_from: docker.io/username/webapp:cache cache_to: docker.io/username/webapp:cache

webapp-release: build: &lt;&lt;: build-dev x-bake: platforms: linux/amd64 linux/arm64

db: image: docker.io/username/db build: dockerfile: Dockerfile.db

$ docker buildx bake --print

{ "group": { "default": { "targets": ["db", "webapp-dev", "webapp-release"] } }, "target": { "db": { "context": ".", "dockerfile": "Dockerfile.db", "tags": ["docker.io/username/db"] }, "webapp-dev": { "context": ".", "dockerfile": "Dockerfile.webapp", "tags": ["docker.io/username/webapp:latest"], "cache-from": [ { "ref": "docker.io/username/webapp:cache", "type": "registry" } ], "cache-to": [ { "ref": "docker.io/username/webapp:cache", "type": "registry" } ] }, "webapp-release": { "context": ".", "dockerfile": "Dockerfile.webapp", "tags": ["docker.io/username/webapp:latest"], "cache-from": [ { "ref": "docker.io/username/webapp:cache", "type": "registry" } ], "cache-to": [ { "ref": "docker.io/username/webapp:cache", "type": "registry" } ], "platforms": ["linux/amd64", "linux/arm64"] } } }

Bounded code example (external data; do not execute automatically):
```text
The compose format has some limitations compared to the HCL format:

- Specifying variables or global scope attributes is not supported
- `inherits` service field is not supported, but you can use [YAML anchors](/reference/compose-file/fragments.md)
  to reference other services, as demonstrated in the previous example with `&amp;build-dev`.
```

Attribution: Adapted from Docker Documentation under Apache-2.0. Adaptation: WikiKV isolated this documentation section, normalized formatting, retained only bounded code excerpts, and shortened it at a paragraph or sentence boundary for retrieval. Verify version-sensitive details at the source.