[Branch-2.8]Fix pulsar_standalone docker image build failed #11862
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Motivation
When build the pulsar-standalone docker image, it throw the following exception
The root cause is when we use ubuntu 20.04 use base docker image instead of openjdk:11-jdk image introduce by #11026 , the ubuntu 20.04 will install
postgresql 12instead ofpostgresql 11by default. However, the init and start script has been hard code with postgresql 11 install path, which will lead tocommand not foundexception.Modification
postgresql 11resource address for ubuntu 20.04 and installpostgresql 11