Building on @AndyTriggs’ answer, a neat (and correct) solution would be:
docker network inspect my_local_network >/dev/null 2>&1 || \
docker network create --driver bridge my_local_network
Building on @AndyTriggs’ answer, a neat (and correct) solution would be:
docker network inspect my_local_network >/dev/null 2>&1 || \
docker network create --driver bridge my_local_network