In some case, not closing the file that was just read by the emitter makes the post action
fails.

See #TMA_ALPE-05775

... with servers that do not support opening file in RW mode (for example AWS
Transfer).

The goal is to avoid the use of libmusl for dns resolution because it
seems to be broken, at least in our infra.

The latest version no longer provides 'catchsegv'

shellcheck is a .sh script formatter