Docker Entry Point Spec

Faculty Leave Style 12 Factor Configuration

- We need a templated version of the appConfig.js which uses handlebar style references to environment variables ```{{ENV_VAR}}```
- we need an angularjs entrypoint.sh based on the angular url(entrypoint.sh)[https://github.com/TAMULib/FacultyLeave/blob/main/client/docker-entrypoint.sh] in faculty leave
      - It will reference environment variables to compile a templated version of the appConfig.js
      - It will write the compiled config to a static asset location      
- We will need to modify the index.html to reference the compiled appConfig.js before the bundle.js
- We may need to modify the current appConfig in the app and appConfigCore in weaver-ui-core to reference the configuration object on the js scope