Fix CI

Author: Jamie Curnow

Jenkinsfile

@@ -6,6 +6,7 @@ pipeline {
   agent any
   environment {
     IMAGE_NAME          = "nginx-proxy-manager"
+    BASE_IMAGE_NAME     = "jc21/nginx-proxy-manager-base"
     TEMP_IMAGE_NAME     = "nginx-proxy-manager-build_${BUILD_NUMBER}"
     TEMP_IMAGE_NAME_ARM = "nginx-proxy-manager-arm-build_${BUILD_NUMBER}"
     //TAG_VERSION         = getPackageVersion()
@@ -23,10 +24,10 @@ pipeline {
           steps {
             ansiColor('xterm') {
               // Codebase
-              sh 'docker run --rm -v $(pwd):/srv/app -w /srv/app $IMAGE_NAME-base:latest yarn --registry=$NPM_REGISTRY install'
-              sh 'docker run --rm -v $(pwd):/srv/app -w /srv/app $IMAGE_NAME-base:latest npm runscript build'
+              sh 'docker run --rm -v $(pwd):/srv/app -w /srv/app $BASE_IMAGE_NAME:latest yarn --registry=$NPM_REGISTRY install'
+              sh 'docker run --rm -v $(pwd):/srv/app -w /srv/app $BASE_IMAGE_NAME:latest npm runscript build'
               sh 'rm -rf node_modules'
-              sh 'docker run --rm -v $(pwd):/srv/app -w /srv/app $IMAGE_NAME-base:latest yarn --registry=$NPM_REGISTRY install --prod'
+              sh 'docker run --rm -v $(pwd):/srv/app -w /srv/app $BASE_IMAGE_NAME:latest yarn --registry=$NPM_REGISTRY install --prod'
               sh 'docker run --rm -v $(pwd):/data $DOCKER_CI_TOOLS node-prune'
 
               // Docker Build
@@ -55,10 +56,10 @@ pipeline {
           steps {
             ansiColor('xterm') {
               // Codebase
-              sh 'docker run --rm -v $(pwd):/srv/app -w /srv/app $IMAGE_NAME-base:armhf yarn --registry=$NPM_REGISTRY install'
-              sh 'docker run --rm -v $(pwd):/srv/app -w /srv/app $IMAGE_NAME-base:armhf npm runscript build'
+              sh 'docker run --rm -v $(pwd):/srv/app -w /srv/app $BASE_IMAGE_NAME:armhf yarn --registry=$NPM_REGISTRY install'
+              sh 'docker run --rm -v $(pwd):/srv/app -w /srv/app $BASE_IMAGE_NAME:armhf npm runscript build'
               sh 'rm -rf node_modules'
-              sh 'docker run --rm -v $(pwd):/srv/app -w /srv/app $IMAGE_NAME-base:armhf yarn --registry=$NPM_REGISTRY install --prod'
+              sh 'docker run --rm -v $(pwd):/srv/app -w /srv/app $BASE_IMAGE_NAME:armhf yarn --registry=$NPM_REGISTRY install --prod'
 
               // Docker Build
                sh 'docker build --pull --no-cache --squash --compress -t TEMP_IMAGE_NAME_ARM .'