Add Docker Support (#2486)

* chore(docker): add build workflow

* chore(docker): update gradle image

* chore(docker): this really shouldnt be running on raspberry pi's right now.

* chore(docker): not sure why we need unzip here

* chore(docker): attempt to add nodejs to allow the handbook to build

* chore(docker): whoops, needs to be done during build

* chore(docker): i dont know if this is going to work

* chore(docker): replace my username with repo org as I am no longer testing this

* chore(docker): version will change in the future, so fix it now.

.gitignore

@@ -64,6 +64,7 @@ tmp/
 
 /*.jar
 /*.sh
+!entrypoint.sh
 
 GM Handbook*.txt
 handbook.html