Fix syntax

Author: vmcj

.github/jobs/baseinstall.sh

@@ -4,7 +4,7 @@
 
 export version="$1"
 db=${2:-install}
-${MYSQL_ROOT_PASSWORD}=${MYSQL_ROOT_PASSWORD:-root}
+MYSQL_ROOT_PASSWORD=${MYSQL_ROOT_PASSWORD:-root}
 
 # If this script is called from unit-tests.sh, we use the test environment
 export APP_ENV="${3:-prod}"