* [Improvement][Docker] Support more configurations and improve image for python
* [Improvement][K8s] Support more configurations, more service accesses, and reduce the duplication configurations
* [Improvement][Python] Improve the compatibility of python home
* [Improvement][Install] Fix install config and install.sh
* [Improvement][Install] Fix workflow ut
* [Improvement][Docker] Optimize docker-swarm/check script
* [Improvement][DB] Update default username and password of database
* Update comments in master/worker.properties
* Specify version for all images
* [Improvement][Docker] Optimize PS1 and WORKDIR
* [Improvement][SQL] Reduce heap size to 64m in create-dolphinscheduler.sh and upgrade-dolphinscheduler.sh
* [Fix-5431][K8s] Fix master and worker cannot get the right address with custom DNS