fix(ci): Accept Cargo features for Docker release builds

[upbqdn]

Motivation

• Close Dockerfile ignores Cargo features for release builds #10008.

Tests

The logs for

docker build -f ./docker/Dockerfile --target runtime --build-arg FEATURES="internal-miner" --tag z .
docker run --rm z

show that the non-default feature is active at Zebra's startup.

PR Checklist

• The PR name is suitable for the release notes.
• The PR follows the contribution guidelines.
• The library crate changelogs are up to date.
• The solution is tested.
• The documentation is up to date.

[mergify]

⚠️ The sha of the head commit of this PR conflicts with #10007. Mergify cannot evaluate rules on this PR. ⚠️

[gustavovalverde]

@upbqdn The diff seems to be including things from:

• fix(CI): Dockerfile builds #10007

[upbqdn]

Should be fixed.

[gustavovalverde]

LGTM