Updated the README.md

Added a healthcheck to the container
adjusted Apache limits for memory consumption
switch to microdnf for improved memory usage

configs/default-index.conf

@@ -7,7 +7,7 @@ Alias "/ping" "/var/www/html"
         MaxSpareThreads         75
         ThreadLimit             64
         ThreadsPerChild         25
-        MaxRequestWorkers       800
-        ServerLimit             32
-        MaxConnectionsPerChild  1500
+        MaxRequestWorkers       150
+        ServerLimit             16
+        MaxConnectionsPerChild  500
 </IfModule>