Docker set up is not working with Nexus

Sonatype Nexus Repository
1

Docker login is Succeeded.We have issue while pulling docker images via Nexus. See the below errors.

Step 1 :
docker login -u username -p password http://:port

WARNING! Using --password via the CLI is insecure. Use --password-stdin.
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See

Login Succeeded

Step2 :

Command : docker pull http://:port/java
logs :
Using default tag: latest
Trying to pull repository http://:port/java …
latest: Pulling from http://:port/java
5040bd298390: Pulling fs layer
fce5728aad85: Pulling fs layer
76610ec20bf5: Pulling fs layer
60170fec2151: Waiting
e98f73de8f0d: Waiting
11f7af24ed9c: Waiting
49e2d6393f32: Waiting
bb9cdec9c7f3: Waiting
error pulling image configuration: unknown blob

Could you please guide here, what is the issue ? But I can download the docker images directly from docker registry.

2

Your syntax is wrong, docker login and docker pull don’t include the protocol, so you should be using “docker login host:port” and “docker pull host:port”.

Also Docker expects to talk to a remote that is running https, not http. You’ll need to configure Nexus to use SSL for communications, and use an https connector port in the docker repository.

Finally, docker is picky about ssl certificates. If you’re going to use a self signed one, see here:

3

Thanks for the reply. Somehow the nexus word is getting removed. But I am using the correct syntax for docker pull from nexus.

docker login -u -p nexus host:port
docker pull nexushost:port/java

Yes, My nexus is running over http. we have set up to use the http registry in (daemon.json) file . Please refer the below link :

4

See the disclaimer at the top of that blob post, saying that it “may no longer be accurate”.

5

So you are suggesting docker will not work with insecure nexus registry with http ?

6

It can work, but only in limited ways, and it doesn’t seem very well tested: Test an insecure registry | Docker Documentation