fix imports

Author: jetersen

src/main/java/org/jenkinsci/plugins/docker/workflow/WithContainerStep.java

@@ -25,18 +25,41 @@
 
 import com.google.common.base.Optional;
 import com.google.inject.Inject;
-import hudson.*;
+import hudson.AbortException;
+import hudson.EnvVars;
+import hudson.Extension;
+import hudson.FilePath;
+import hudson.Launcher;
+import hudson.LauncherDecorator;
+import hudson.Proc;
+import hudson.Util;
 import hudson.model.Computer;
 import hudson.model.Node;
 import hudson.model.Run;
 import hudson.model.TaskListener;
 import hudson.slaves.WorkspaceList;
 import hudson.util.VersionNumber;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.TreeSet;
 import org.jenkinsci.plugins.docker.commons.fingerprint.DockerFingerprints;
 import org.jenkinsci.plugins.docker.commons.tools.DockerTool;
 import org.jenkinsci.plugins.docker.workflow.client.DockerClient;
 import org.jenkinsci.plugins.docker.workflow.client.WindowsDockerClient;
-import org.jenkinsci.plugins.workflow.steps.*;
+import org.jenkinsci.plugins.workflow.steps.AbstractStepDescriptorImpl;
+import org.jenkinsci.plugins.workflow.steps.AbstractStepExecutionImpl;
+import org.jenkinsci.plugins.workflow.steps.AbstractStepImpl;
+import org.jenkinsci.plugins.workflow.steps.BodyExecutionCallback;
+import org.jenkinsci.plugins.workflow.steps.BodyInvoker;
+import org.jenkinsci.plugins.workflow.steps.StepContext;
+import org.jenkinsci.plugins.workflow.steps.StepContextParameter;
 import org.kohsuke.stapler.DataBoundConstructor;
 import org.kohsuke.stapler.DataBoundSetter;
 
@@ -46,7 +69,6 @@
 import java.io.IOException;
 import java.io.Serializable;
 import java.nio.charset.Charset;
-import java.util.*;
 import java.util.concurrent.TimeUnit;
 import java.util.logging.Level;
 import java.util.logging.Logger;
@@ -103,6 +125,9 @@ public static class Execution extends AbstractStepExecutionImpl {
         private String container;
         private String toolName;
 
+        public Execution() {
+        }
+
         @Override public boolean start() throws Exception {
             EnvVars envReduced = new EnvVars(env);
             EnvVars envHost = computer.getEnvironment();