Testing changes to Autoware code and launch files

[AbBaSaMo]

@Monash-Connected-Autonomous-Vehicle/avp-team

So, if we assume our autoware.repos points to our own forks where relevant, to verify that changes have been made do we need to build autoware/the docker container each time using the updated code? If we are working on a branch on a fork, autoware.repos would have to point to the branch rather than main too.

How much of an issue will this be?