Hey,
I do my first steps with docker and created a web server with this help:
That works fine. 
After that, I tried to connect the mysql with a new phpmyadmin:
docker run -d --name pma -p 8095:80
–network example_default -e PMA-HOST=example_mysql-example phpmyadmin/phpmyadmin
There were a few parts pulled and after that I got this error:
docker: Error response from daemon: Could not attach to network example_default: rpc error: code = PermissionDenied desc = network example_default not manually attachable.
Can someone help me how to fix this?
Update: I even realized, that the update to the www folder with the Webserver doesn’t work. Maybe there is someone with an idea too.
Cheers, Philipp