Graceful shutdown of WSO2 Integration Docker containers when issued a SIGTERM

[chirangaalwis]

Description:
It was identified that the graceful shutdown of WSO2 Integration product servers does not take place when passing a SIGTERM. A SIGTERM can be issued via,

docker kill --signal="SIGTERM" <container-name>

or

docker stop <container-name>

Affected Product Version:
Docker resources for WSO2 Enterprise Integrator v6.5.x and below

Sub Tasks:

• Fixed in Alpine based Docker resources
• Fixed in CentOS based Docker resources
• Fixed in Ubuntu based Docker resources
• Code/Peer review