Update to latest versions of everything

[mikesir87]

Lots of updates to bring the app up to current versions, info, etc. Those items include:

• Updated the app from node:12-alpine to node:18-alpine (latest LTS version)
• Upgrade all app dependencies to their latest versions
• Remove need to install python, make, and other build tools as they are no longer needed due to other upgrades
• Upgrade mysql to 8.0, which facilitated the switch from the mysql to mysql2 NPM package (to support latest auth protocols MySQL uses)
• Upgrade all dashboard screenshots to current version of Docker Desktop
• Swap all Docker Compose examples to use the current spec (getting rid of the version key)
• Update all links going to Compose v3 to current Compose spec docs
• Upgrade all docker-compose commands to docker compose
• Update various build outputs to match that seen by BuildKit as it's the default builder now
• Update main docs Dockerfile to force the test stage to run (since BuildKit is smart enough to skip the stage if it isn't specifically used)

[StefanScherer]

Thank you, this is a huge improvement! 😍
Looking through it right now. Could we also change the main README.md file to use docker compose up without the dash? :-)

[mikesir87]

Ah! Good catch @StefanScherer! Just updated the README.md and found one other spot still referencing docker-compose up.

[StefanScherer]

LGTM 🎉