Gitlab: build docker container, then use it for compilation - docker

Question

Heres my .gitlab-ci.yml
stages:
- containerize
- compile
build_image:
image: docker
stage: containerize
script:
- docker build -t compiler_image_v0 .
compile:
image: compiler_image_v0
stage: compile
script:
- make
artifacts:
when: on_success
paths:
- output/
expire_in: 1 day
The build_image is running correctly, the image created is listed when using the docker images command on the machine with the runners. But the second job fails with the error:
ERROR: Job failed: Error response from daemon: pull access denied for compiler_image_v0, repository does not exist or may require 'docker login' (executor_docker.go:168:1s)
What's going on?
This is my Dockerfile
FROM ubuntu:18.04
WORKDIR /app
# Ubuntu packages
RUN apt-get update
RUN DEBIAN_FRONTEND=noninteractive apt-get -y install apt-utils subversion g++ make cmake unzip
RUN DEBIAN_FRONTEND=noninteractive apt-get -y install libgtk2.*common libpango-1* libasound2* xserver-xorg
RUN DEBIAN_FRONTEND=noninteractive apt-get -y install cpio
RUN DEBIAN_FRONTEND=noninteractive apt-get -y install bash
RUN DEBIAN_FRONTEND=noninteractive apt-get -y install autoconf automake perl m4
# Intel Fortran compiler
RUN mkdir /intel
COPY parallel_studio_xe_2018_3_pro_for_docker.zip /intel
RUN cd /intel && unzip /intel/parallel_studio_xe_2018_3_pro_for_docker.zip
RUN cd /intel/parallel_studio_xe_2018_3_pro_for_docker && ./install.sh --silent=custom_silent.cfg
RUN rm -rf /intel

Answer 1

The stage compile tries to pull the image compiler_image_v0. This image exists only temporary in the docker container of the stage containerize. You have a container registry in your gitlab repository and can push the built image in the containerize stage and then pull it in the compile stage. Furthermore: You should provide a full name of your private gitlab registry. I think dockerhub is used per default.
You can change your .gitlab.ci.yaml to add the push command and use a fully named image:
stages:
- containerize
- compile
build_image:
image: docker
stage: containerize
script:
- docker build -t compiler_image_v0 .
- docker push registry.gitlab.com/group-name/repo-name:compiler_image_v0
compile:
image: registry.gitlab.com/group-name/repo-name:compiler_image_v0
stage: compile
script:
- make
artifacts:
when: on_success
paths:
- output/
expire_in: 1 day
This would overwrite the image on each build. But you could add some versioning.