fix(git): fix git related issues on docker

- Rollback change made earlier to simple-git
  - Use pinned version of heroku docker image as this
version seems not to have the issue. This will be analyzed in a future release

dockerfiles/sfpowerscripts.Dockerfile

@@ -1,4 +1,4 @@
-FROM heroku/heroku:20
+FROM  heroku/heroku:20.v77
 
 
 ENV DEBIAN_FRONTEND=noninteractive

packages/sfpowerscripts-cli/package.json

@@ -1,7 +1,7 @@
 {
     "name": "@dxatscale/sfpowerscripts",
     "description": "A build system for package based development in Salesforce,delivered as a sfdx plugin that can be implemented in any CI/CD system of choice.Read more about the plugin and details here - https://dxatscale.gitbook.io/sfpowerscripts/",
-    "version": "13.6.15",
+    "version": "13.6.16",
     "author": "dxatscale",
     "release": "May 22",
     "bin": {

packages/sfpowerscripts-cli/src/impl/parallelBuilder/BuildImpl.ts

@@ -18,7 +18,7 @@ import { COLOR_ERROR } from '@dxatscale/sfpowerscripts.core/lib/logger/SFPLogger
 import SfpPackage, { PackageType } from '@dxatscale/sfpowerscripts.core/lib/package/SfpPackage';
 import SfpPackageBuilder from '@dxatscale/sfpowerscripts.core/lib/package/SfpPackageBuilder';
 import getFormattedTime from '@dxatscale/sfpowerscripts.core/lib/utils/GetFormattedTime'
-import ExecuteCommand from '@dxatscale/sfpowerscripts.core/lib/command/commandExecutor/ExecuteCommand'
+
 
 const PRIORITY_UNLOCKED_PKG_WITH_DEPENDENCY = 1;
 const PRIORITY_UNLOCKED_PKG_WITHOUT_DEPENDENCY = 3;
@@ -78,7 +78,7 @@ export default class BuildImpl {
         SFPLogger.log(`Invoking build...`,LoggerLevel.INFO);
         const git = simplegit();
         if (this.props.repourl == null) {
-            this.repository_url = await new ExecuteCommand().execCommand(`git config --get remote.origin.url`,process.cwd());
+            this.repository_url = (await git.getConfig('remote.origin.url')).value;
             SFPLogger.log(`Fetched Remote URL ${this.repository_url}`,LoggerLevel.INFO);
         } else this.repository_url = this.props.repourl;