[KafkaHub] Update publisher sample code with ability to provide payload as an env-variable

[ayeshLK]

Purpose

$subject

Examples

• Usage:

docker run --rm --network host --name websub-publisher -e TOPIC_NAME="sample-topic" -e PAYLOAD='{"itemName":"Panasonic Trimmer","itemCode":"ITM30030","previousPrice":5000.00,"newPrice":4500.00,"currencyCode":"SEK"}' ayeshalmeida/wbsbpublisher:3.0.0

Checklist

• Linked to an issue
• Updated the changelog
• Added tests
• Updated the spec
• Checked native-image compatibility

[sonarqubecloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (8c5d909) 89.03% compared to head (d604dad) 89.03%.
Report is 7 commits behind head on kafkahub-mtls.

Additional details and impacted files

@@               Coverage Diff                @@
##             kafkahub-mtls     #906   +/-   ##
================================================
  Coverage            89.03%   89.03%           
  Complexity              37       37           
================================================
  Files                   15       15           
  Lines                  830      830           
  Branches               448      448           
================================================
  Hits                   739      739           
  Misses                  87       87           
  Partials                 4        4           

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