Update self-versioning

Jenkinsfile

@@ -15,30 +15,38 @@ pipeline {
     
   }
   stages {
-    //Pulls docker image for self-versioning
-    stage("Pull Versioning Image")
-    {
-        steps
-        {
-          withEcr {
-            sh "docker pull ${DOCKER_REGISTRY}/auto-semver:${SELF_SEMVER_TAG}"
-          }
-        }
-    }
     //Runs versioning in docker container
-    stage('Version') {
-        agent {
-            docker {
-                image "${DOCKER_REGISTRY}/auto-semver:${SELF_SEMVER_TAG}"
-            }
-        }
+    stage('Self Version') {
       steps {
-        // runs the automatic semver tool which will version, & tag,
-        runAutoSemver()
-
-        //Grabs current version
         script
         {
+
+          def docker_image = docker.image("${DOCKER_REGISTRY}/auto-semver:${SELF_SEMVER_TAG}")
+          docker_image.inside{
+
+            def RETURN_STATUS
+            def regex = '^\\s*current_version\\s*=\\s*\\K[^\\s]+'
+            env.SEMVER_OLD_VERSION = sh(script: "grep -Po '${regex}' .bumpversion.cfg", returnStdout: true).trim()
+
+            RETURN_STATUS = sh(script: "semver -n", returnStatus: true)
+            echo "Semver Return Status: ${RETURN_STATUS}"
+            env.SEMVER_STATUS = RETURN_STATUS
+            switch (RETURN_STATUS) {
+              case "0":
+                echo 'Versioned will push after build/test.'
+                break
+              case "128":
+                echo 'Unknown Semver Failure'
+                sh 'exit 1'
+                break
+              default:
+                echo 'No versioning required.'
+                break
+            }
+
+            env.SEMVER_NEW_VERSION = sh(script: "grep -Po '${regex}' .bumpversion.cfg", returnStdout: true).trim()
+            env.SEMVER_RESOLVED_VERSION = getVersion('-d')
+
             env.VERSION = getVersion('-d')
         }
       }