Upgrade to 41 and stretch

1 job for master in 57 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
failed #90
build

00:00:57

 
Name Stage Failure
failed
build Build
Removing intermediate container d606e1badaaf
Step 4/7 : COPY FD380FBB-pub.asc /tmp/apt-key.asc
---> 6b3986d35345
Removing intermediate container c151615a1a24
Step 5/7 : RUN apt-key add /tmp/apt-key.asc && apt-get update && apt-get install -y pdns-server pdns-backend-mysql && rm -rf /var/cache/apt && mv /etc/powerdns /etc/powerdns.dist
---> Running in b0b7e4fc5308
E: gnupg, gnupg2 and gnupg1 do not seem to be installed, but one of them is required for this operation
The command '/bin/sh -c apt-key add /tmp/apt-key.asc && apt-get update && apt-get install -y pdns-server pdns-backend-mysql && rm -rf /var/cache/apt && mv /etc/powerdns /etc/powerdns.dist' returned a non-zero code: 255
ERROR: Job failed: exit code 255