Try disabling dind as a service

5 jobs for master in 31 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
failed #19
build

00:00:31

failed #18
build

00:00:37

failed #17
build

00:00:18

failed #16
build

00:00:19

failed #15
build

00:00:18

 
Name Stage Failure
failed
build Build
WARNING: Ignoring http://dl-cdn.alpinelinux.org/alpine/v3.7/main/x86_64/APKINDEX.tar.gz: temporary error (try again later)
WARNING: Ignoring http://dl-cdn.alpinelinux.org/alpine/v3.7/community/x86_64/APKINDEX.tar.gz: temporary error (try again later)
ERROR: unsatisfiable constraints:
nginx (missing):
required by: world[nginx]
supervisor (missing):
required by: world[supervisor]
The command '/bin/sh -c apk add --no-cache nginx supervisor' returned a non-zero code: 2
ERROR: Job failed: exit code 2