Not able to pull development images from docker hub registry

[waveywaves]

While installing compose-on-kubernetes on Openshift, docker is not able to pull the images. I had a sucessful installation before this a few days ago and upon trying to install again got the following errors in the events log.

$ oc get events

25s         33s          3         compose-6f86bfd5df-kb9p2.15872989417a6a81       Pod                                     Normal    SandboxChanged      kubelet, shiftnode1     Pod sandbox changed, it will be killed and re-created.
22s         1m           2         compose-6f86bfd5df-kb9p2.1587297fa20fd69c       Pod          spec.containers{compose}   Normal    Pulling             kubelet, shiftnode1     pulling image "docker/kube-compose-dev-controller:v0.4.18"
12s         55s          2         compose-api-7d54c4c88b-5dsv4.1587298436dad512   Pod          spec.containers{compose}   Warning   Failed              kubelet, shiftnode1     Failed to pull image "docker/kube-compose-dev-api-server:v0.4.18": rpc error: code = Unknown desc = repository docker.io/docker/kube-compose-dev-api-server not found: does not exist or no pull access
12s         55s          2         compose-api-7d54c4c88b-5dsv4.1587298436db5795   Pod          spec.containers{compose}   Warning   Failed              kubelet, shiftnode1     Error: ErrImagePull
11s         51s          3         compose-api-7d54c4c88b-5dsv4.15872985211b345f   Pod          spec.containers{compose}   Normal    BackOff             kubelet, shiftnode1     Back-off pulling image "docker/kube-compose-dev-api-server:v0.4.18"
11s         51s          3         compose-api-7d54c4c88b-5dsv4.15872985211bae48   Pod          spec.containers{compose}   Warning   Failed              kubelet, shiftnode1     Error: ImagePullBackOff

I was able to pull the docker/kube-compose-controller and docker/kube-compose-api-server images but not the developer ones.

docker images | grep compose
docker/kube-compose-controller                                       latest              634012027887        4 weeks ago         30.8MB
docker/kube-compose-api-server                                       latest              3a4f4d2514c0        4 weeks ago         48.4MB

$ docker version
Client:
 Version:           18.09.2
 API version:       1.39
 Go version:        go1.10.6
 Git commit:        6247962
 Built:             Sun Feb 10 04:13:56 2019
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          18.09.2
  API version:      1.39 (minimum version 1.12)
  Go version:       go1.10.6
  Git commit:       6247962
  Built:            Sun Feb 10 03:47:25 2019
  OS/Arch:          linux/amd64
  Experimental:     false

$ docker info
Containers: 19
 Running: 0
 Paused: 0
 Stopped: 19
Images: 21
Server Version: 18.09.2
Storage Driver: overlay2
 Backing Filesystem: extfs
 Supports d_type: true
 Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host macvlan null overlay
 Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 9754871865f7fe2f4e74d43e2fc7ccd237edcbce
runc version: 09c8266bf2fcf9519a651b04ae54c967b9ab86ec
init version: fec3683
Security Options:
 seccomp
  Profile: default
Kernel Version: 4.18.10-200.fc28.x86_64
Operating System: Fedora 28 (Workstation Edition)
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 19.31GiB
Name: localhost.localdomain
ID: 6DYY:6P6W:LHQN:S7HN:MQHN:3W3T:SCWZ:WLWT:GWXS:4RQM:OLCD:DEBO
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false
Product License: Community Engine

[simonferquel]

Dev images are only built using your local daemon and are never pushed to the registry. The development workflow is currently tailored for developers using Docker Desktop (which provides a single-node local kubernetes). This works on Docker Desktop, because the daemon used for building images is the same as the one using to run Kubernetes workloads (so when you do a docker build, the built image is available for Kubernetes workloads without having to push to a registry).

For developing on an external cluster, you can play with the IMAGE_REPO_PREFIX env variable and push the images in your own repository.

[waveywaves]

Was able to change the image, using the IMAGE_REPO_PREFIX, so that a workable image could be pulled from dockerHub without giving an ErrImagePull error.

 # export IMAGE_REPO_PREFIX="docker/kube-compose-"