chore: add updated environment variables

Author: innocenzi

.env.example

@@ -1,2 +1,25 @@
-ENVIRONMENT=production
-DISCOVERY_CACHE=false
+# Possible values: local, staging, production, ci, testing, other
+ENVIRONMENT=local
+
+# The base URI that's used for all generated URIs
+BASE_URI=http://localhost
+
+# The CACHE key is used as a global override to turn all caches on or off
+# Should be true in production, but null or false in local development
+CACHE=null
+
+# Enable or disable discovery cache
+DISCOVERY_CACHE=false
+
+# Enable or disable config cache
+CONFIG_CACHE=false
+
+# Enable or disable view cache
+VIEW_CACHE=false
+
+# Enable or disable project cache (allround cache)
+PROJECT_CACHE=false
+
+# Overwrite default log paths (null = default)
+DEBUG_LOG_PATH=null
+SERVER_LOG_PATH=null