I am following the guide from https://www.howtoforge.com/how-to-install-apache-guacamole-as-docker-container-on-ubuntu/.
This is a docker question.
**I run the following command: **
docker run --rm guacamole/guacamole /opt/guacamole/bin/initdb.sh --mysql > /opt/guacamole/mysql/01-initdb.sql**The result is: **
/opt/guacamole/mysql/01-initdb.sql: Permission denied
Can someone help me resolve this please?