Committing work fixing issues found while testing on dev1.bookmarks

- Modified EnvironmentUtils to fix proper casing for getting ASPNETCore_Environment
- On Web, modify package.json to delete 'homepage': '.', line to fix issue with app not serving up subroutes. See: https://stackoverflow.com/questions/63036631/nginx-returning-404-when-trying-get-subroute-in-dockerized-react-app
- Added docker-compose for easier setup and deployment of local docker containers

API/YABA.Common/Utils/EnvironmentUtils.cs

@@ -4,6 +4,6 @@ namespace YABA.Common.Utils
 {
     public static class EnvironmentUtils
     {
-        public static bool IsDevelopmentEnvironment() => Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT") == "Development";
+        public static bool IsDevelopmentEnvironment() => Environment.GetEnvironmentVariable("ASPNETCORE_Environment") == "Development";
     }
 }