Create pipeline for builds

Jenkinsfile

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+// this file only: (c) 2020 Kegan Myers, use allowed under the MIT License
+pipeline {
+  agent any
+  stages {
+    stage('build') {
+      steps {
+        checkout scm
+        script {
+          sh 'git rev-parse HEAD > commit'
+          def gitCommit = readFile('commit').trim()
+          def registryHost = "registry.terrible.network"
+          def imagePath = "terribleplan/folding-at-home-docker-gpu"
+
+          // my registry
+          withCredentials([usernamePassword(credentialsId: 'registry-terrible-network', passwordVariable: 'password', usernameVariable: 'username')]) {
+            sh "docker login -u '${username}' -p '${password}' 'https://${registryHost}'"
+          }
+          // docker hub
+          withCredentials([usernamePassword(credentialsId: 'docker-hub', passwordVariable: 'password', usernameVariable: 'username')]) {
+            sh "docker login -u '${username}' -p '${password}'"
+          }
+
+          // my registry
+          def sourceImage = "${registryHost}/${imagePath}:${gitCommit}"
+          sh "docker build -t '${sourceImage}' ."
+          sh "docker tag '${sourceImage}' '${registryHost}/${imagePath}:latest'"
+          sh "docker push '${registryHost}/${imagePath}:latest'"
+
+          // docker hub
+          sh "docker tag '${sourceImage}' '${imagePath}:${gitCommit}'"
+          sh "docker push '${imagePath}:${gitCommit}'"
+          sh "docker tag '${sourceImage}' '${imagePath}:latest'"
+          sh "docker push '${imagePath}:latest'"
+        }
+      }
+    }
+  }
+}
+