bugfxi: fixed issue of presuppose environment variable and replace base image for tool

[helloworlde]

Ⅰ. Describe what this PR did

1. Removed presuppose environment variable
2. Replace base image of JDK8
3. Add JVM args for respect CPU and RAM limits

Ⅱ. Does this pull request fix one issue?

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-io]

Codecov Report

Merging #1984 into develop will increase coverage by 0.02%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             develop    #1984      +/-   ##
=============================================
+ Coverage      55.26%   55.28%   +0.02%     
- Complexity      2430     2432       +2     
=============================================
  Files            432      432              
  Lines          14439    14439              
  Branches        1706     1706              
=============================================
+ Hits            7979     7982       +3     
  Misses          5735     5735              
+ Partials         725      722       -3

Impacted Files	Coverage Δ	Complexity Δ
...o/seata/server/coordinator/DefaultCoordinator.java	48.41% <0%> (+0.39%)	28% <0%> (ø)	⬇️
...in/java/io/seata/server/session/GlobalSession.java	85.02% <0%> (+0.48%)	68% <0%> (+1%)	⬆️
...ource/sql/struct/cache/AbstractTableMetaCache.java	88.23% <0%> (+2.94%)	12% <0%> (+1%)	⬆️

[zjinlei]

LGTM

[xingfudeshi]

LGTM.