Gitlab CI Build failed gitlab-runner-prebuilt.tar.xz: no such file or directory

Question

I just installed Gitlab Runner on my dev machine (Ubuntu 17.10) for testing. When I run the runner I got:

$: sudo gitlab-runner exec docker test       
   Running with gitlab-ci-multi-runner dev (1.4.2)
   Using Docker executor with image php:5.6 ...
   ERROR: Build failed (system failure): open /var/lib/gitlab-runner/gitlab-runner-prebuilt.tar.xz: no such file or directory
   FATAL: open /var/lib/gitlab-runner/gitlab-runner-prebuilt.tar.xz: no such file or directory 

.gitlab-ci.yml file:

image: php:5.6

before_script:
  - php -v

stages:
  - test

test:
  script:
  - php -v

Current installation process:

sudo apt-get install gitlab-runner

Output:

...
Configuring gitlab-ci-multi-runner (1.4.2+dfsg-1) ...
I: generating GitLab Runner Docker image. This may take a while...
E: No mirror specified and no default available
W: please run 'sudo /usr/lib/gitlab-runner/mk-prebuilt-images.sh' to generate Docker image.
...

So I did:

$: sudo /usr/lib/gitlab-runner/mk-prebuilt-images.sh
   I: generating GitLab Runner Docker image. This may take a while...
   E: No mirror specified and no default available

Answer 1

Got the same problem today. Turns out cdebootstrap command in usr/lib/gitlab-runner/mk-prebuilt-images.sh is causing this error message:

cdebootstrap \
     --flavour=minimal \
     --exclude="dmsetup,e2fsprogs,init,systemd-sysv,systemd,udev" \
     --include="bash,ca-certificates,git,netcat-traditional" \
     stable ./debian-minbase

Change the last line to:

     stable ./debian-minbase https://deb.debian.org/debian/ 

The script should now proceed without any errors. More info on debootstrap can be found here.