Deploy Dind and secure Docker Registry on Kubernetes (colon issues)

The only thing I come up with is using symlinks. I tested it and it works. I also tried searching for better solution but didn't find anything satisfying.

Have a look at this example:

apiVersion: v1kind: Podmetadata:  name: myapp-pod  labels:    app: myappspec:  containers:  - name: myapp-container    image: centos:7    command: ['sh', '-c', 'mkdir -p /etc/docker/certs.d/registry:5000 && ln -s /some/random/path/ca.crt /etc/docker/certs.d/registry:5000/ca.crt && exec sleep 10000']    volumeMounts:    - mountPath: '/some/random/path'      name: registry-cert  volumes:  - name: registry-cert    secret:      secretName: my-secret

And here is a template secret i used:

apiVersion: v1kind: Secretmetadata:  name: my-secret  namespace: defaulttype: Opaquedata:  ca.crt: <<< some_random_Data >>>

I have mounted this secret into a /some/random/path location (without colon so it wouldn't throw errors) and created a symlink between /some/random/path/ca.crt and /etc/docker/certs.d/registry:5000/ca.crt.Of course you also need to create a dir structure before running ln -s ..., that is why I run mkdir -p ....

Let me know if you have any further questions. I'd be happy to answer them.