3ae72e7867 ci: Disable Docker build summary generation (Hennadii Stepanov)
Pull request description:
The generated Docker build [summaries](https://github.com/bitcoin-core/secp256k1/actions/runs/21595861407) provide little practical value to the development workflow and clutter the CI output.
This PR disables them.
ACKs for top commit:
real-or-random:
utACK 3ae72e7867
Tree-SHA512: 0b28520765d5aa1c43ae7025c9be082742bc3784f743b4983947236bceb0255b2fa82cdf81d284470eeb83bda72b442019e051048319681bff09ac190d9b52f6
15d014804e ci: Drop default for `inputs.command` in `run-in-docker-action` (Hennadii Stepanov)
1decc49a1f ci: Use YAML anchor and aliases for repeated "CI script" steps (Hennadii Stepanov)
dff1bc107d ci, refactor: Generalize use of `matrix.configuration.env_vars` (Hennadii Stepanov)
4b644da199 ci: Use YAML anchor and aliases for repeated "Print logs" steps (Hennadii Stepanov)
a889cd93df ci: Bump `actions/checkout` version (Hennadii Stepanov)
574c2f3080 ci: Use YAML anchor and aliases for repeated "Checkout" steps (Hennadii Stepanov)
Pull request description:
GHA YAML parser now [supports](https://github.com/actions/runner/issues/1182#issuecomment-3156285802) anchors.
This PR makes use of that support to [DRY](https://en.wikipedia.org/wiki/Don%27t_repeat_yourself) the workflow code.
ACKs for top commit:
real-or-random:
utACK 15d014804e
Tree-SHA512: a25a226fec0053242bc46b8c9815067a35af632cfbffefcc5cd4c96a67c0535dde447753099cbc74ecc64072d36aef2aa78c105b66f43cb3134ffa1ae60dca1e