Adds a note to the Docker Build Cloud setup steps clarifying that
`docker buildx create --driver cloud` connects Buildx to an existing
cloud builder created on the dashboard — it does not provision a new one.
Fixes#25150
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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## Description
This PR updates the Docker Build Cloud CI documentation to clarify the
use of builder and credential variables.
**Key changes:**
- Standardizes the use of `DOCKER_ACCOUNT`, `DOCKER_ACCESS_TOKEN`, and
`CLOUD_BUILDER_NAME` in all CI/CD examples.
- Updates template string syntax for builder endpoints (e.g., `${{
vars.DOCKER_ACCOUNT }}/${{ vars.CLOUD_BUILDER_NAME }}` in GitHub
Actions).
- Adds explicit call outs that the cloud builder has to be created
first.
- Improves instructions for naming and referencing cloud builders in
both the dashboard and CLI steps.
- Ensures all code comments and documentation are consistent and clear
for users setting up Docker Build Cloud in CI.
These changes make it easier for users to configure their CI/CD
pipelines correctly and reduce confusion around builder and credential
setup.
## Related issues or tickets
https://docker.atlassian.net/browse/DCL-248
## Reviews
<!-- Notes for reviewers here -->
<!-- List applicable reviews (optionally @tag reviewers) -->
- [ ] Technical review
- [ ] Editorial review
- [ ] Product review
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Co-authored-by: Allie Sadler <102604716+aevesdocker@users.noreply.github.com>
