Sync dockerfile for integration testing

[lpoli]

Fixes

Changes

This PR refreshes dockerfile for conductor testing to standard dockerfile

Need to be mentioned in CHANGELOG.md?

Tests

Tasks to complete before merging PR:

• Ensure system tests are passing. If not Run them manually to check for any regressions 📋
• Do any new system tests need added to test this change? do any existing system tests need updated? If so create a PR at 0chain/system_test
• Merge your system tests PR to master AFTER merging this PR

Associated PRs (Link as appropriate):

• blobber:
• gosdk:
• system_test:
• zboxcli:
• zwalletcli:
• Other: ...

[codecov-commenter]

Codecov Report

Merging #2347 (60e8f63) into staging (7b352d9) will increase coverage by 0.02%.
The diff coverage is n/a.

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@@             Coverage Diff             @@
##           staging    #2347      +/-   ##
===========================================
+ Coverage    29.11%   29.13%   +0.02%     
===========================================
  Files          380      380              
  Lines        63295    63295              
===========================================
+ Hits         18426    18439      +13     
+ Misses       42713    42692      -21     
- Partials      2156     2164       +8     

Flag	Coverage Δ
Unit-Tests	29.13% <ø> (+0.02%)	⬆️

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see 3 files with indirect coverage changes

[peterlimg]

LGTM

[peterlimg]

System tests failures are not related to the changes.