1 files changed, 43 insertions, 2 deletions

diff --git a/Jenkinsfile b/Jenkinsfile
index a458d2a..f7f3f28 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,10 +1,51 @@
 pipeline {
     agent any
 
+    environment {
+        REGISTRY = 'registry.example.com/docker-images'
+    }
+
     stages {
-        stage('Verify') {
+        stage('Detect changed images') {
+            steps {
+                script {
+                    def base = env.CHANGE_TARGET ? "origin/${env.CHANGE_TARGET}" : "HEAD~1"
+                    def changed = sh(
+                        script: "git diff --name-only ${base} HEAD | cut -d/ -f1 | sort -u",
+                        returnStdout: true
+                    ).trim().split('\n')
+
+                    // keep only dirs containing a Dockerfile
+                    env.IMAGES_TO_BUILD = changed.findAll {
+                        fileExists("${it}/Dockerfile")
+                    }.join(',')
+                }
+            }
+        }
+
+        stage('Build & push') {
+            when { expression { env.IMAGES_TO_BUILD } }
             steps {
-                echo 'Jenkins is successfully executing the Pipeline!'
+                script {
+                    def shortSha = env.GIT_COMMIT.take(8)
+                    env.IMAGES_TO_BUILD.split(',').each { img ->
+                        def tag = "${REGISTRY}/${img}"
+                        sh """
+                            docker build \
+                              --label org.opencontainers.image.source=${env.GIT_URL} \
+                              --label org.opencontainers.image.revision=${env.GIT_COMMIT} \
+                              -t ${tag}:${shortSha} \
+                              ${img}/
+                        """
+                        if (env.BRANCH_NAME == 'main') {
+                            sh """
+                                docker tag ${tag}:${shortSha} ${tag}:latest
+                                docker push ${tag}:${shortSha}
+                                docker push ${tag}:latest
+                            """
+                        }
+                    }
+                }
             }
         }
     }