Simplify application management and align with other docker applications

The notion of application "instances" is dropped in favor of a simpler,
single-instance approach. Default values are provided for all configuration
variables so allow the app to run without additional manual configuration.

A health check and auto-heal script are added to automatically restart the
application in case it becomes unavailable during operation.

docker/Dockerfile.streamline-emr.amd64

@@ -3,7 +3,6 @@
 # COPY my.cnf /etc/mysql/my.cnf
 # COPY mysql-init.sh /var/www/html/.docker/mysql/mysql-init.sh
 
-
 FROM php:8.2-fpm-alpine
 
 # Install necessary packages and cleanup   
@@ -49,4 +48,4 @@ RUN chmod +x /var/www/html/start_up.sh
 # Define the entry point and expose port 80, 3306
 ENTRYPOINT ["/bin/sh", "/var/www/html/start_up.sh"]
 
-EXPOSE 80 3306
+EXPOSE 80 3306