Cloud run issue - failed to start & listen a container port : 8080

[Mojojo_SOS]

i'm working on a POC concept on python 
ive built python application using docker image and pushed to gcr.io repo.the image is running in local environment perfectly.

when i tried to create cloud run as a service " The user-provided container failed to start and listen on the port defined provided by the PORT=8080 environment variable. Logs for this revision might contain more information."

the POC don't need port 8080 to access the container bucket

this is the error I'm getting. the same docker image is succeeded as cloud run job but wont run as service

any help would be appreciated....

thank you

[Shaiknagulmeera]

While creating cloud run service please keep port number as 80 not 8080