Add missing dockerfile path to append it in launch command

[som-matrix]

• Added documentation for a new input parameter "dockerfile", which allows specifying a custom Dockerfile path for the build process. This addition provides flexibility in managing different Docker configurations.

action.yml

• Streamlined Inputs: Modified the action's inputs by introducing the dockerfile input for specifying Dockerfile paths directly.

entrypoint.sh

• Implemented support for specifying custom Dockerfile paths, increasing flexibility in Docker image construction.

[som-matrix]

Hi folks , please review this when you are free