Custom container image for CI?

[matthewrmshin]

Given that CI is failing due to our usage of old container images supplied by JCSDA, we can either:

• Build our own custom container image, like orca-jedi is doing.
• Upgrade to more recent container images from JCSDA, if any available.

Originally posted by @matthewrmshin in #246 (comment)

@ctgh Yes, (and bearing in mind that this is a public repo like orca-jedi), we can do what orca-jedi is doing and build our own container image for CI purpose and storing the image under GitHub container registry.