[ci] docker improvements (#1101)

Jenkinsfile

@@ -67,8 +67,8 @@ pipeline {
 
                             move "_packages\\*.zip" "soh.zip"
                             """
-                            archiveArtifacts artifacts: 'soh.zip', followSymlinks: false, onlyIfSuccessful: true
                         }
+                        archiveArtifacts artifacts: 'soh.zip', followSymlinks: false, onlyIfSuccessful: true
                     }
                     post {
                         always {
@@ -91,6 +91,7 @@ pipeline {
                         catchError(buildResult: 'FAILURE', stageResult: 'FAILURE') {
                             unstash 'assets'
                             sh '''
+                            if docker ps -aq --filter "name=sohcont" | grep -q .; then docker rm -f sohcont; fi
                             docker build . -t soh
                             docker run --name sohcont -dit --rm -v $(pwd):/soh soh /bin/bash
                             docker exec sohcont scripts/linux/appimage/build.sh
@@ -102,11 +103,12 @@ pipeline {
                             
                             '''
                         }
-                        sh 'sudo docker container stop sohcont'
                         archiveArtifacts artifacts: 'soh-linux.7z', followSymlinks: false, onlyIfSuccessful: true
                     }
                     post {
                         always {
+                            sh 'sudo docker container stop sohcont'
+                            sh 'docker images --quiet --filter=dangling=true | xargs --no-run-if-empty docker rmi' // Clean dangling docker images
                             step([$class: 'WsCleanup']) // Clean workspace
                         }
                     }
@@ -159,9 +161,10 @@ pipeline {
                         catchError(buildResult: 'FAILURE', stageResult: 'FAILURE') {
                             unstash 'assets'
                             sh '''                            
+                            if docker ps -aq --filter "name=sohswitchcont" | grep -q .; then docker rm -f sohswitchcont; fi
                             docker build . -t sohswitch
-                            docker run --name sohcont -dit --rm -v $(pwd):/soh sohswitch /bin/bash
-                            docker exec sohcont scripts/switch/build.sh
+                            docker run --name sohswitchcont -dit --rm -v $(pwd):/soh sohswitch /bin/bash
+                            docker exec sohswitchcont scripts/switch/build.sh
                             
                             mv build-switch/soh/*.nro soh.nro
                             mv README.md readme.txt
@@ -170,11 +173,12 @@ pipeline {
                             
                             '''
                         }
-                        sh 'sudo docker container stop sohcont'
                         archiveArtifacts artifacts: 'soh-switch.7z', followSymlinks: false, onlyIfSuccessful: true
                     }
                     post {
                         always {
+                            sh 'sudo docker container stop sohswitchcont'
+                            sh 'docker images --quiet --filter=dangling=true | xargs --no-run-if-empty docker rmi' // Clean dangling docker images
                             step([$class: 'WsCleanup']) // Clean workspace
                         }
                     }