(gcloud.preview.app.deploy) Error Response: [400] "env" setting is not supported for this deployment - deployment

Question

I try these tutorial https://cloud.google.com/tools/cloud-repositories/docs/push-to-deploy, and I do mvn gcloud:deploy,but got the error messages bellow:
[dev-jenkins-test-1] $ /bin/sh -xe /tmp/hudson4310631253025446569.sh
+ mvn gcloud:deploy
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building jenkins-test-java 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> gcloud-maven-plugin:2.0.9.88.v20151125:deploy (default-cli) > package # jenkins-test-java >>>
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) # jenkins-test-java ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /var/jenkins/workspace/dev-jenkins-test-1/src/main/resources
[INFO]
[INFO] --- maven-compiler-plugin:2.5.1:compile (default-compile) # jenkins-test-java ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) # jenkins-test-java ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /var/jenkins/workspace/dev-jenkins-test-1/src/test/resources
[INFO]
[INFO] --- maven-compiler-plugin:2.5.1:testCompile (default-testCompile) # jenkins-test-java ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) # jenkins-test-java ---
[INFO] No tests to run.
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) # jenkins-test-java ---
[WARNING] JAR will be empty - no content was marked for inclusion!
[INFO]
[INFO] <<< gcloud-maven-plugin:2.0.9.88.v20151125:deploy (default-cli) < package # jenkins-test-java <<<
[INFO]
[INFO] --- gcloud-maven-plugin:2.0.9.88.v20151125:deploy (default-cli) # jenkins-test-java ---
[INFO] Running gcloud app deploy...
[INFO] Running python -S /google/google-cloud-sdk/lib/googlecloudsdk/gcloud/gcloud.py --quiet --project=straw-hat-pirates-dev preview app deploy /var/jenkins/workspace/dev-jenkins-test-1/target/appengine-staging/app.yaml
[INFO] WARNING: Soon, deployments will set the deployed version to receive all traffic by
[INFO] default.
[INFO]
[INFO] To keep the current behavior (where new deployments do not receive any traffic),
[INFO] use the `--no-promote` flag or run the following command:
[INFO]
[INFO] $ gcloud config set app/promote_by_default false
[INFO]
[INFO] To adopt the new behavior early, use the `--promote` flag or run the following
[INFO] command:
[INFO]
[INFO] $ gcloud config set app/promote_by_default true
[INFO]
[INFO] Either passing one of the new flags or setting one of these properties will
[INFO] silence this message.
[INFO]
[INFO] You are about to deploy the following modules:
[INFO] - straw-hat-pirates-dev/default (from [/var/jenkins/workspace/dev-jenkins-test-1/target/appengine-staging/app.yaml])
[INFO] Deployed URL: [https://20151223t054356-dot-straw-hat-pirates-dev.appspot.com]
[INFO] (add --promote if you also want to make this module available from
[INFO] [https://straw-hat-pirates-dev.appspot.com])
[INFO]
[INFO] Beginning deployment...
[INFO] Verifying that Managed VMs are enabled and ready.
[INFO]
[INFO] Provisioning remote build service.
[INFO] Copying certificates for secure access. You may be prompted to create an SSH keypair.
[INFO] Building and pushing image for module [default]
[INFO] ----------------------------- DOCKER BUILD OUTPUT ------------------------------
[INFO] Step 0 : FROM gcr.io/google_appengine/openjdk8
[INFO] ---> 3c058a018ce1
[INFO] Step 1 : ADD jenkins-test-java-1.0-SNAPSHOT.jar /app/
[INFO] ---> 938437aaa1a1
[INFO] Removing intermediate container 4106bc3645ca
[INFO] Step 2 : ENTRYPOINT java -jar /app/jenkins-test-java-1.0-SNAPSHOT.jar
[INFO] ---> Running in f187a76322dd
[INFO] ---> 4600e0f4d83a
[INFO] Removing intermediate container f187a76322dd
[INFO] Successfully built 4600e0f4d83a
[INFO] --------------------------------------------------------------------------------
[INFO]
[INFO] Updating module [default]...
[INFO] Updating module [default].../
[INFO] Updating module [default]...failed.
[INFO] ERROR: (gcloud.preview.app.deploy) Error Response: [400] "env" setting is not supported for this deployment.
[INFO] Deleted [https://www.googleapis.com/compute/v1/projects/straw-hat-pirates-dev/zones/us-central1-f/instances/gae-builder-vm-20151223t054356].
[ERROR] Error: gcloud app command with exit code : 1
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 02:03 min
[INFO] Finished at: 2015-12-23T05:45:57+00:00
[INFO] Final Memory: 11M/56M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.google.appengine:gcloud-maven-plugin:2.0.9.88.v20151125:deploy (default-cli) on project jenkins-test-java: Error: gcloud app command exit code is: 1 -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
Build step 'Execute shell' marked build as failure
Finished: FAILURE
I guess :
It seems like something wrong with my environment configuration.
I still cannot fix this problem.
Thank for your help. :)

Answer 1

I figured it out.
I'll bet your maven module is not setup with <packaging>war</packaging>
If your module is set to jar (default), then it tried to deploy as a standard java application where you are going to launch your own server. Since you want a managed vm with appengine running, you need to package as war, and then the plugin will take care of the rest.
Cheers.