Issues with the docker package take a long time to debug using jenkins. Write a docker build script similar to the appimage build script that can be run locally or on jenkins. Unify any duplicate code between the docker and appimage build scripts.

• Create a docker build script that is similar to the AppImage build script. This script should be able to be run locally for development/debugging purposes. (0.25d) @mssalvatore
• Modify the jenkins Docker script to use the new Docker build script. See the jenkins appimage script for a reference. (0d) @mssalvatore
• Extract any duplicate code from the AppImage and Docker jenkins scripts into a common location. (0d) @mssalvatore
• Extract any duplicate code from the AppImage and Docker build scripts into a common location. (0d) @mssalvatore