contrib: fix unmatching version of gcc and gcc-python-plugin in Docke…

[ampresent]

…rfile

Although we build the docker image based on AnolisOS 8.6, softwares are automatically upgraded to the latest minor version of AnolisOS 8. gcc-python-plugin hasn't bumped its version to match gcc. So in order to get it work, we explicitly install softwares of AnolisOS 8.6 on this image.

[anolis-bot]

@ampresent , a new test job has been submitted. Please wait in patience. The test job url: https://tone.openanolis.cn/ws/2r1b4c7z/test_result/53758

[anolis-bot]

@ampresent , The CI test is completed, please check result:

Test Case		Test Result
schedule_test	x86_64	:x: FAIL
schedule_test	aarch64	:x: FAIL

Sorry, your test job failed. Please get the details in the link.

[Dengerwei]

LGTM.