Take a look at our wiki about how to configure email settings for Bitnami Discourse Stack:
About sidekiq not running, it seems there is a problem and the service went down like @dgonzalez and @jose pointed.
I launched a Discourse image from the Azure Bitnami Launchpad and the file
ctlscript.sh is present and works fine.
Have you modified the file in any way?
Have you tried with
sudo or giving it execute permissions?
sudo chmod +x /opt/bitnami/ctlscript.sh
sudo /opt/bitnami/ctlscript.sh restart
# Try also the following
sudo bash /opt/bitnami/ctlscript.sh restart
If nothing worked yet, please run the following commands and paste here the output:
ls -la /opt/bitnami/ctlscript.sh