[games] Add sleep to source image (#14)

Sleep for 1 second before proceeding with steamcmd update to make sure it doesn't deadlock

games/source/entrypoint.sh

@@ -22,6 +22,9 @@
 # SOFTWARE.
 #
 
+# Wait for the container to fully initialize
+sleep 1
+
 # Default the TZ environment variable to UTC.
 TZ=${TZ:-UTC}
 export TZ