LOG_APP_NAME -> SERVER_APP_NAME and README update

Author: Israel Derdik

README.md

@@ -6,3 +6,4 @@ Variable | Example | Description
 --- | --- | ---
 `SERVER_MAX_BODY_SIZE` | `SERVER_MAX_BODY_SIZE=4M` | Allows the downstream application to specify a non-default `client_max_body_size` configuration for the `server`-level directive in `/etc/nginx/sites-available/default`
 `SERVER_INDEX` | `SERVER_INDEX index.html index.html index.php` | Changes the default pages to hit for folder and web roots
+`SERVER_APP_NAME` | `APP_NAME='view'` | Sets a kv pair to be consumed by logging service for easy parsing and searching

container/root/run.sh

@@ -11,7 +11,7 @@ sed -i "s/worker_connections [0-9]\+/worker_connections 1024/" $CONFIG_SERVER
 echo '[nginx] piping logs to STDOUT'
 # Ensure nginx is configured to write logs to STDOUT 
 # Also set log_format to output SERVER_APP_NAME placeholder 
-sed -i "s/access_log [a-z\/\.\;]\+/            log_format main \'\$remote_addr - \$remote_user [\$time_local] \"\$request\" \$status \$bytes_sent \"\$http_referer\" \"\$http_user_agent\" LOG_APP_NAME\';\n        access_log \/dev\/stdout main;\n/" $CONFIG_SERVER
+sed -i "s/access_log [a-z\/\.\;]\+/            log_format main \'\$remote_addr - \$remote_user [\$time_local] \"\$request\" \$status \$bytes_sent \"\$http_referer\" \"\$http_user_agent\" SERVER_APP_NAME\';\n        access_log \/dev\/stdout main;\n/" $CONFIG_SERVER
 sed -i "s/error_log [a-z\/\.\ \;]\+/error_log \/dev\/stdout info;/" $CONFIG_SERVER
 
 if [[ $SERVER_MAX_BODY_SIZE ]]