Web application no longer restarts automatically on Azure WebApps on TOMCAT server : HTTP 404 - azure

Question

My applications were working properly on Azure, but after a Microsoft Docker update, they don't all restart automatically.
I have an HTTP 404:
My analysis :
This application was deployed with Microsoft tools
az webapp deploy ...
in log : /home/DeploymentLogStream/ xxx.log
the application is deployed correctly and it is present on file system
...
"Clean deploying to /home/site/wwwroot/webapps/wholesale"}
"Generating deployment script."}
"Using cached version of deployment script (command: 'azure -y --no-dot
"Running deployment command..."}
"Command: \"/home/site/deployments/tools/deploy.sh\""}
"Handling Basic Web Site deployment."}
....
"Requesting site restart"}
"Requesting site restart. Attempt #1"}
"Successfully requested a restart. Attempt #1"}
"Deployment successful. deployer = OneDeploy deploymentPath = OneDeploy
In Docker Log file I see an update of Microsoft image :
675db21ca06b Extracting 133B / 133B
675db21ca06b Extracting 133B / 133B
675db21ca06b Pull complete
Digest: sha256:932deb9018db39b74249774b4206906424f3fea09b791e9318c43316dc695aff
Status: Downloaded newer image for mcr.microsoft.com/azure-app-service/tomcat:8.5-jre8_220406005815
Pull Image successful, Time taken: 1 Minutes and 11 Seconds
Starting container for site
docker run -d -p 8871:80 --name ..
Container ... initialized successfully and is ready to serve requests.
But in Tomcat log File I only see the default ROOT module and not my Web application.
and indeed my app is not copy from /home/site/wwwroot/webapps/wholesale to /usr/local/tomcat/webapps/wholesale
/usr/local/tomcat/webapps
Redeployment does not change the problem.
Multiple restarts solve the problem but without understanding why.
The workaround is to manually copy the directory from /home to /usr, but next update will remove it.
Someone has an idea to solve the problem ?

Answer 1

Apologies for the inconvenience with this issue and delayed response here.
Users using the auto-update version of Tomcat on Linux that deploy multiple applications in the webapps directory may see their apps return 404.
You may manually change the version to respective working version:
Tomcat 8.5: 8.5.72
Tomcat 9.0: 9.0.54
Tomcat 10.0: 10.0.12
You may also check Azure Service Health history, notification info.
Kindly let us know how it goes.