Replace use of paulczar/omgwtfssl image in examples

[Abhicodeitout]

@joshtrichards @tzerber

Summary

I have replaced the outdated paulczar/omgwtfssl image used for self-signed certificate generation with a custom cert-generator service built on Alpine and OpenSSL. The new solution supports environment-based configuration, improving flexibility and maintainability.

What was changed

• Removed paulczar/omgwtfssl service from docker-compose.yml
• Added a new cert-generator service with:
  • Dockerfile using alpine and openssl
  • entrypoint.sh script to read cert parameters from environment variables
• Mounted cert output to existing shared certs volume for use by other services (like nginx-proxy)

Why it matters

• paulczar/omgwtfssl is no longer maintained
• The new solution is minimal, secure, and customizable
• Aligns better with modern Docker Compose practices

How to test

1. Build and run the cert-generator:

   docker compose build cert-generator
   docker compose up cert-generator

[Abhicodeitout]

@joshtrichards can you review this one !!

[tzerber]

While I haven't tested it, it looks okay. A note : Add some documentation around it. I know about several ways of "oneline ssl via random alpine image" long commands, and these tend to confuse people. Use some sort of placeholder like <PUT.DOMAIN.HERE> and maybe add few lines to the docs about it.

Overall, it looks good. Will test it as soon as I can.

[Abhicodeitout]

@tzerber i have just added a section which includes the replacement of the paulczar/omgwtfssl i don't think i have used any domain information .
and document updation can you clarify little on that .

[tzerber]

@tzerber i have just added a section which includes the replacement of the paulczar/omgwtfssl i don't think i have used any domain information . and document updation can you clarify little on that .

Sorry for the late reply, but I was away from the civilization for a while.

Recently we started adding additional information in the readme.md / inline on the compose file for any non-nextcloud third party programs providing both links to their documents/manuals and some information on how to use that software in combination with Nextcloud.