13.docker-compose.yml.tmpl, line 1
tmpstr=$(resolvectl | grep -o '[[:digit:]]\+\.[[:digit:]]\+\.[[:digit:]]\+\.[[:digit:]]\+' | awk '!x[$0]++' | sed 's/^/ - /')uniq cannot remove the same lines when they are not adjacent. For example:
# when the input like this
aaa
aaa
bbb
ccc
# result after apply uniq
aaa
bbb
ccc
# when the input like this
aaa
bbb
aaa
ccc
# result after apply uniq
aaa
bbb
aaa
ccc# same as uniq, but support same lines which are not adjacent
awk '!x[$0]++'