Is it permissible to work in a bakery that makes bread with alcohol, if the work is limited to pushing the bread cart? And is it permissible to work in a place that serves non-halal meat or pork?

If alcohol—which is impure according to the majority of scholars—is added to bread, then the bread becomes impure. Even if it is not impure, it is not permissible to eat it due to the prohibition of alcohol, and thus it is not permissible to manufacture or carry it, as it involves assisting in sin. As for his friend's work in a place that sells pork, if he sells pork, serves it, or assists in that, then his work is unlawful. Otherwise, there is no harm in his work, but it is preferable to leave it if he finds another job.