Refactor Publish Repository stage in Jenkinsfile to include GPG passphrase handling and improve snapshot management

Jenkinsfile

@@ -56,18 +56,38 @@ pipeline {
         stage("Publish Repository") {
             steps {
                 sshagent(['srv01_elordenador_org']) {
-                    sh '''
-                    ssh ${APTLY_HOST} << 'EOF'
-                    SNAPSHOT="espos-build-${BUILD_NUMBER}"
-                    aptly snapshot create $SNAPSHOT from repo espos-unstable
-                    aptly repo add ${APTLY_REPO} /tmp/*.deb
-                    aptly publish switch ${APTLY_REPO} $SNAPSHOT
 
-                    EOF
-                    '''
+                    withCredentials([
+                        string(
+                            credentialsId: 'aptly_gpg_pass',
+                            variable: 'GPG_PASS'
+                        )
+                    ]) {
+
+                        sh '''
+                        ssh ${APTLY_HOST} << EOF
+
+                        aptly repo add espos-unstable /tmp/*.deb
+
+                        if aptly publish list | grep -q espos-unstable
+                        then
+                            aptly publish switch \
+                                -passphrase="$GPG_PASS" \
+                                espos-unstable
+                        else
+                            aptly publish repo \
+                                -distribution=espos-unstable \
+                                -component=main \
+                                -passphrase="$GPG_PASS" \
+                                espos-unstable
+                        fi
+
+                        EOF
+                        '''
+                    }
                 }
             }
-        }
+        }   
     }
     post {
         success {