feat: migrate to Ruby 3.3 w/ GitHub Actions automation

[iBotPeaches]

tldr

• Image is based on Ubuntu 24 with Ruby 3.3, Python 3.8, Java 21 and Node 20
• Includes uv & pipenv for the new/old Python dependency management.
• GitHub Actions automates deployment to DockerHub

testing

• I tested deployments to my own random docker hub project here
  • tag push - https://github.com/iBotPeaches/fastlane-docker/actions/runs/19167010165
  • ci test - https://github.com/iBotPeaches/fastlane-docker/actions/runs/19166747964/job/54789135337
  • dockerhub test - https://hub.docker.com/repository/docker/ibotpeaches/fastlaneci-test/general

nerdy

• By using the latest CircleCI 3.3 we gain Ubuntu 24 which sets us for success with a more modern base (Noble). After that due to dependencies on other systems requiring specific tools and versions we setup Python 3.8 and Xar.
• We jump from Java 8 to Java 21 - both LTS.
• We create tests to ensure the tools we need execute out of this built image.

for admin of DockerHub

1. Go to Environments of this repo - make one called "deploy".
2. Harden it to ONLY tags of form *
3. Add a secret for DOCKERHUB_USERNAME - username for DockerHub
4. Add a secret for DOCKERHUB_TOKEN - PAT for DockerHub needs Read/Write.

---

• closes fix: use strech and modern env set #10
• closes Replaced jessie with stretch because errors building Dockerfile due to public key issues #9

[janpio]

Generally looks good to me.

@joshdholtz is probably the one with the Dockerhub credentials.

[iBotPeaches]

Thanks! I'm waking up the Slack Team used in the past to try and reach out to those with permission to things more easily - I can only imagine the huge backlog of GitHub pings there are.

[lacostej]

isn't uv supposed to replace pip?

[iBotPeaches]

Yeah I figured I needed both in meantime to do a few "hops" among fastlane/docs so everything didn't go at once.