Replace unnecessary double quotes with single quotes.

Author: johnbillion

docker-compose.yml

@@ -82,7 +82,10 @@ services:
     command: ${LOCAL_DB_AUTH_OPTION-}
 
     healthcheck:
-      test: [ "CMD-SHELL", "if [ \"$LOCAL_DB_TYPE\" = \"mariadb\" ]; then case \"$LOCAL_DB_VERSION\" in 5.5|10.0|10.1|10.2|10.3) mysqladmin ping -h localhost || exit $$?;; *) mariadb-admin ping -h localhost || exit $$?;; esac; else mysqladmin ping -h localhost || exit $$?; fi" ]
+      test: [
+        'CMD-SHELL',
+        'if [ "$LOCAL_DB_TYPE" = "mariadb" ]; then case "$LOCAL_DB_VERSION" in 5.5|10.0|10.1|10.2|10.3) mysqladmin ping -h localhost || exit $$?;; *) mariadb-admin ping -h localhost || exit $$?;; esac; else mysqladmin ping -h localhost || exit $$?; fi'
+      ]
       timeout: 5s
       interval: 5s
       retries: 10