Docker images using old zef etc

[finanalyst]

Docker images use old version of zef that does not get new modules, eg., DateTime::strftime

1. With the following DockerFile

FROM docker.io/croservices/cro-http-websocket:0.8.6
RUN zef --version

Response is

STEP 2/11: RUN zef --version
v0.8.2

Current version of zef is 0.22.7

2. When using docker images tagged 0.8.7 + zef is not available.

3. When trying image tagged 0.8.10, docker build error is

STEP 1/11: FROM docker.io/croservices/cro-http-websocket:0.8.10
Trying to pull docker.io/croservices/cro-http-websocket:0.8.10...
Error:error creating build container: initializing source docker://croservices/cro-http-websocket:0.8.10: reading manifest 0.8.10 in docker.io/croservices/cro-http-websocket: manifest unknown: manifest unknown

4. When trying RUN zef upgrade zef, there is a failure because zef is now NOT using old ecosystem.

I could not find where docker images are built to offer a patch