Add bc

[paulgessinger]

This pull request updates the Docker build workflow and several Dockerfiles to streamline image building and maintenance. The main changes include removing certain build contexts from the workflow, updating base image versions for consistency, and adding the bc utility to various Docker images.

Workflow and build context updates:

• Removed several build contexts (ubuntu2404_cuda_oneapi, ubuntu2404_rocm_oneapi, alma9_rocm_oneapi, alma9_cuda_oneapi) from the .github/workflows/build-images.yml workflow to simplify the build matrix. [1] [2]
• Stopped tagging images for gitlab-registry.cern.ch in the workflow, focusing on GitHub Container Registry.
• Removed Docker login step for GitLab registry, further reducing reliance on external registries.

Dockerfile improvements:

• Updated the base image version to ghcr.io/acts-project/ubuntu2404:82 in all relevant Dockerfiles (ubuntu2404_cuda, ubuntu2404_cuda_oneapi, ubuntu2404_rocm_oneapi, ubuntu2404_oneapi) for consistency and to use the latest dependencies. [1] [2] [3] [4]
• Added the bc utility to the package installs in several Dockerfiles (ubuntu2404, ubuntu2404_clang19, ubuntu2404_gnn) to support scripts or applications that require it. [1] [2] [3]

Maintenance and build logic:

• Improved package removal logic for GNN builds by including the ubuntu2404_tensorrt context in the conditional step.