Allow runCmds to change user.

src/main/asciidoc/inc/build/_configuration.adoc

@@ -121,7 +121,7 @@ a| Scan the archive specified in `dockerArchive` and find the actual repository
 | Shell to be used for the *runCmds*. It contains *arg* elements which are defining the executable and its params.
 
 | *runCmds*
-| Commands to be run during the build process. It contains *run* elements which are passed to the shell. Whitespace is trimmed from each element and empty elements are ignored. The run commands are inserted right after the assembly and after *workdir* into the Dockerfile. This tag is not to be confused with the `<run>` section for this image which specifies the runtime behaviour when starting containers.
+| Commands to be run during the build process. It contains *run* elements which are passed to the shell. You may also change user with a *user* element, but beware this will overwrite default user from the parent image, so you should supply a user for the image if you do. Whitespace is trimmed from each element and empty elements are ignored. The run commands are inserted right after the assembly and after *workdir* into the Dockerfile. This tag is not to be confused with the `<run>` section for this image which specifies the runtime behaviour when starting containers.
 
 | *skip*
 | if set to true disables building of the image. This config option is best used together with a maven property
@@ -181,6 +181,8 @@ remote API.
   <runCmds>
     <run>groupadd -r appUser</run>
     <run>useradd -r -g appUser appUser</run>
+    <user>appUser</user
+    <run>id</run>
   </runCmds>
 
   <entryPoint>

src/main/java/io/fabric8/maven/docker/BuildMojo.java

@@ -33,7 +33,7 @@
  * @author roland
  * @since 28.07.14
  */
-@Mojo(name = "build", defaultPhase = LifecyclePhase.INSTALL, requiresDependencyResolution = ResolutionScope.TEST)
+@Mojo(name = "build", defaultPhase = LifecyclePhase.INSTALL, requiresDependencyResolution = ResolutionScope.TEST, configurator = "fabric8-mojo-configurator")
 public class BuildMojo extends AbstractBuildSupportMojo {
 
     public static final String DMP_PLUGIN_DESCRIPTOR = "META-INF/maven/io.fabric8/dmp-plugin";

src/main/java/io/fabric8/maven/docker/CopyMojo.java

@@ -1,19 +1,5 @@
 package io.fabric8.maven.docker;
 
-import java.io.File;
-import java.io.IOException;
-import java.nio.file.Files;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.List;
-import java.util.Properties;
-import java.util.regex.Matcher;
-
-import org.apache.maven.plugin.MojoExecutionException;
-import org.apache.maven.plugins.annotations.LifecyclePhase;
-import org.apache.maven.plugins.annotations.Mojo;
-import org.apache.maven.plugins.annotations.Parameter;
-
 import io.fabric8.maven.docker.access.DockerAccess;
 import io.fabric8.maven.docker.config.CopyConfiguration;
 import io.fabric8.maven.docker.config.CopyConfiguration.Entry;
@@ -28,6 +14,19 @@
 import io.fabric8.maven.docker.util.ContainerNamingUtil;
 import io.fabric8.maven.docker.util.GavLabel;
 import io.fabric8.maven.docker.util.Logger;
+import org.apache.maven.plugin.MojoExecutionException;
+import org.apache.maven.plugins.annotations.LifecyclePhase;
+import org.apache.maven.plugins.annotations.Mojo;
+import org.apache.maven.plugins.annotations.Parameter;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Properties;
+import java.util.regex.Matcher;
 
 /**
  * <p>Mojo for copying file or directory from container.<p/>
@@ -41,7 +40,7 @@
  * matching images configured in the project are searched and the copying is performed from the found containers
  * only.</p>
  */
-@Mojo(name = "copy", defaultPhase = LifecyclePhase.POST_INTEGRATION_TEST)
+@Mojo(name = "copy", defaultPhase = LifecyclePhase.POST_INTEGRATION_TEST, configurator = "fabric8-mojo-configurator")
 public class CopyMojo extends AbstractDockerMojo {
 
     private static final String COPY_NAME_PATTERN_CONFIG = "copyNamePattern";

src/main/java/io/fabric8/maven/docker/LogsMojo.java

@@ -24,7 +24,7 @@
  * @since 26.03.14
  *
  */
-@Mojo(name = "logs")
+@Mojo(name = "logs", configurator = "fabric8-mojo-configurator")
 public class LogsMojo extends AbstractDockerMojo {
 
     // Whether to log infinitely or to show only the logs happened until now.

src/main/java/io/fabric8/maven/docker/MojoConfigurator.java

@@ -0,0 +1,46 @@
+package io.fabric8.maven.docker;
+
+import io.fabric8.maven.docker.assembly.DockerFileKeyword;
+import io.fabric8.maven.docker.config.RunCommand;
+import org.codehaus.plexus.component.configurator.BasicComponentConfigurator;
+import org.codehaus.plexus.component.configurator.ComponentConfigurationException;
+import org.codehaus.plexus.component.configurator.ConfigurationListener;
+import org.codehaus.plexus.component.configurator.converters.ConfigurationConverter;
+import org.codehaus.plexus.component.configurator.converters.lookup.ConverterLookup;
+import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluator;
+import org.codehaus.plexus.configuration.PlexusConfiguration;
+
+import javax.inject.Named;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * Configure a converter for runcmds that can be either USER or RUN with value as parameter
+ */
+
+@Named("fabric8-mojo-configurator")
+public class MojoConfigurator extends BasicComponentConfigurator {
+    private static final Set<String> VALID_KEYWORDS = new HashSet<>(Arrays.asList("RUN", "USER"));
+
+    public MojoConfigurator() {
+        converterLookup.registerConverter(new ConfigurationConverter() {
+            @Override
+            public boolean canConvert(Class<?> aClass) {
+                return RunCommand.class == aClass;
+            }
+
+            @Override
+            public Object fromConfiguration(ConverterLookup converterLookup, PlexusConfiguration plexusConfiguration, Class<?> aClass, Class<?> aClass1, ClassLoader classLoader, ExpressionEvaluator expressionEvaluator) throws ComponentConfigurationException {
+                return fromConfiguration(converterLookup, plexusConfiguration, aClass, aClass1, classLoader, expressionEvaluator, null);
+            }
+
+            @Override
+            public Object fromConfiguration(ConverterLookup converterLookup, PlexusConfiguration plexusConfiguration, Class<?> aClass, Class<?> aClass1, ClassLoader classLoader, ExpressionEvaluator expressionEvaluator, ConfigurationListener configurationListener) throws ComponentConfigurationException {
+                String keyword = plexusConfiguration.getName().trim().toUpperCase();
+                if (!VALID_KEYWORDS.contains(keyword) || plexusConfiguration.getValue() == null) return null;
+                return new RunCommand(DockerFileKeyword.valueOf(keyword), plexusConfiguration.getValue().trim());
+            }
+        });
+    }
+}

src/main/java/io/fabric8/maven/docker/PushMojo.java

@@ -3,7 +3,6 @@
 import io.fabric8.maven.docker.access.DockerAccessException;
 import io.fabric8.maven.docker.service.JibBuildService;
 import io.fabric8.maven.docker.service.ServiceHub;
-
 import io.fabric8.maven.docker.util.MojoParameters;
 import org.apache.maven.plugin.MojoExecutionException;
 import org.apache.maven.plugins.annotations.LifecyclePhase;
@@ -15,7 +14,7 @@
  *
  * @author roland
  */
-@Mojo(name = "push", defaultPhase = LifecyclePhase.DEPLOY)
+@Mojo(name = "push", defaultPhase = LifecyclePhase.DEPLOY, configurator = "fabric8-mojo-configurator")
 public class PushMojo extends AbstractDockerMojo {
 
     // Registry to use for push operations if no registry is specified

src/main/java/io/fabric8/maven/docker/RemoveMojo.java

@@ -20,7 +20,6 @@
 import io.fabric8.maven.docker.service.QueryService;
 import io.fabric8.maven.docker.service.ServiceHub;
 import io.fabric8.maven.docker.util.ImageName;
-
 import org.apache.maven.plugin.MojoExecutionException;
 import org.apache.maven.plugins.annotations.LifecyclePhase;
 import org.apache.maven.plugins.annotations.Mojo;
@@ -46,7 +45,7 @@
  * @since 23.10.14
  *
  */
-@Mojo(name = "remove", defaultPhase = LifecyclePhase.POST_INTEGRATION_TEST)
+@Mojo(name = "remove", defaultPhase = LifecyclePhase.POST_INTEGRATION_TEST, configurator = "fabric8-mojo-configurator")
 public class RemoveMojo extends AbstractDockerMojo {
 
     private static final String REMOVE_NAME_PATTERN_CONFIG = "removeNamePattern";

src/main/java/io/fabric8/maven/docker/RunMojo.java

@@ -24,7 +24,7 @@
  * @author roland
  * @since 26/04/16
  */
-@Mojo(name = "run", defaultPhase = LifecyclePhase.PRE_INTEGRATION_TEST)
+@Mojo(name = "run", defaultPhase = LifecyclePhase.PRE_INTEGRATION_TEST, configurator = "fabric8-mojo-configurator")
 public class RunMojo extends StartMojo {
 
     @Override

src/main/java/io/fabric8/maven/docker/SaveMojo.java

@@ -1,11 +1,9 @@
 package io.fabric8.maven.docker;
 
-import java.io.File;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Properties;
-
+import io.fabric8.maven.docker.access.DockerAccessException;
 import io.fabric8.maven.docker.config.ArchiveCompression;
+import io.fabric8.maven.docker.config.ImageConfiguration;
+import io.fabric8.maven.docker.service.ServiceHub;
 import io.fabric8.maven.docker.util.EnvUtil;
 import io.fabric8.maven.docker.util.ImageName;
 import org.apache.maven.plugin.MojoExecutionException;
@@ -14,11 +12,12 @@
 import org.apache.maven.plugins.annotations.Parameter;
 import org.apache.maven.project.MavenProjectHelper;
 
-import io.fabric8.maven.docker.access.DockerAccessException;
-import io.fabric8.maven.docker.config.ImageConfiguration;
-import io.fabric8.maven.docker.service.ServiceHub;
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Properties;
 
-@Mojo(name = "save")
+@Mojo(name = "save", configurator = "fabric8-mojo-configurator")
 public class SaveMojo extends AbstractDockerMojo {
 
     // Used when not automatically determined

src/main/java/io/fabric8/maven/docker/SourceMojo.java

@@ -16,24 +16,23 @@
  * limitations under the License.
  */
 
-import java.io.File;
-import java.util.ArrayList;
-import java.util.List;
-
 import io.fabric8.maven.docker.access.DockerAccessException;
 import io.fabric8.maven.docker.config.BuildImageConfiguration;
-import io.fabric8.maven.docker.config.ImageConfiguration;
 import io.fabric8.maven.docker.config.BuildImageSelectMode;
+import io.fabric8.maven.docker.config.ImageConfiguration;
 import io.fabric8.maven.docker.service.ServiceHub;
 import io.fabric8.maven.docker.util.MojoParameters;
-
 import org.apache.maven.plugin.MojoExecutionException;
 import org.apache.maven.plugins.annotations.Component;
 import org.apache.maven.plugins.annotations.LifecyclePhase;
 import org.apache.maven.plugins.annotations.Mojo;
 import org.apache.maven.plugins.annotations.Parameter;
 import org.apache.maven.project.MavenProjectHelper;
 
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * Mojo for attaching one more source docker tar file to an artifact.
  *
@@ -44,7 +43,7 @@
  * @author roland
  * @since 25/10/15
  */
-@Mojo(name = "source", defaultPhase = LifecyclePhase.PACKAGE)
+@Mojo(name = "source", defaultPhase = LifecyclePhase.PACKAGE, configurator = "fabric8-mojo-configurator")
 public class SourceMojo extends AbstractBuildSupportMojo {
 
     @Component

src/main/java/io/fabric8/maven/docker/StartMojo.java

@@ -8,22 +8,6 @@
  * the License.
  */
 
-import java.io.IOException;
-import java.util.ArrayDeque;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Properties;
-import java.util.Queue;
-import java.util.Set;
-import java.util.concurrent.ExecutionException;
-import java.util.concurrent.ExecutorCompletionService;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.Future;
-import java.util.concurrent.TimeUnit;
-
 import com.google.common.util.concurrent.MoreExecutors;
 import io.fabric8.maven.docker.access.DockerAccessException;
 import io.fabric8.maven.docker.access.ExecException;
@@ -46,13 +30,29 @@
 import org.apache.maven.plugins.annotations.Mojo;
 import org.apache.maven.plugins.annotations.Parameter;
 
+import java.io.IOException;
+import java.util.ArrayDeque;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Properties;
+import java.util.Queue;
+import java.util.Set;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorCompletionService;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+
 
 /**
  * Goal for creating and starting a docker container. This goal evaluates the image configuration
  *
  * @author roland
  */
-@Mojo(name = "start", defaultPhase = LifecyclePhase.PRE_INTEGRATION_TEST)
+@Mojo(name = "start", defaultPhase = LifecyclePhase.PRE_INTEGRATION_TEST, configurator = "fabric8-mojo-configurator")
 public class StartMojo extends AbstractDockerMojo {
 
     @Parameter(property = "docker.showLogs")

src/main/java/io/fabric8/maven/docker/StopMojo.java

@@ -1,21 +1,5 @@
 package io.fabric8.maven.docker;
 
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-import java.util.regex.Matcher;
-
-import org.apache.maven.plugin.MojoExecutionException;
-import org.apache.maven.plugin.MojoFailureException;
-import org.apache.maven.plugins.annotations.LifecyclePhase;
-import org.apache.maven.plugins.annotations.Mojo;
-import org.apache.maven.plugins.annotations.Parameter;
-
 import io.fabric8.maven.docker.access.DockerAccessException;
 import io.fabric8.maven.docker.access.ExecException;
 import io.fabric8.maven.docker.config.ImageConfiguration;
@@ -28,6 +12,21 @@
 import io.fabric8.maven.docker.service.ServiceHub;
 import io.fabric8.maven.docker.util.ContainerNamingUtil;
 import io.fabric8.maven.docker.util.GavLabel;
+import org.apache.maven.plugin.MojoExecutionException;
+import org.apache.maven.plugin.MojoFailureException;
+import org.apache.maven.plugins.annotations.LifecyclePhase;
+import org.apache.maven.plugins.annotations.Mojo;
+import org.apache.maven.plugins.annotations.Parameter;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.regex.Matcher;
 
 
 /**
@@ -43,7 +42,7 @@
  * @since 26.03.14
  *
  */
-@Mojo(name = "stop", defaultPhase = LifecyclePhase.POST_INTEGRATION_TEST)
+@Mojo(name = "stop", defaultPhase = LifecyclePhase.POST_INTEGRATION_TEST, configurator = "fabric8-mojo-configurator")
 public class StopMojo extends AbstractDockerMojo {
 
     private static final String STOP_NAME_PATTERN_CONFIG = "stopNamePattern";

src/main/java/io/fabric8/maven/docker/TagMojo.java

@@ -15,7 +15,7 @@
  * Goal for Tagging an image so that it becomes part of a repository.
  *
  */
-@Mojo(name = "tag", defaultPhase = LifecyclePhase.INSTALL)
+@Mojo(name = "tag", defaultPhase = LifecyclePhase.INSTALL, configurator = "fabric8-mojo-configurator")
 public class TagMojo extends AbstractDockerMojo {
     @Parameter(property = "docker.skip.tag", defaultValue = "false")
     private boolean skipTag;

src/main/java/io/fabric8/maven/docker/VolumeCreateMojo.java

@@ -15,7 +15,7 @@
  * @author Tom Burton
  * @version Dec 15, 2016
  */
-@Mojo(name = "volume-create", defaultPhase = LifecyclePhase.PRE_INTEGRATION_TEST)
+@Mojo(name = "volume-create", defaultPhase = LifecyclePhase.PRE_INTEGRATION_TEST, configurator = "fabric8-mojo-configurator")
 public class VolumeCreateMojo extends AbstractDockerMojo {
 
     @Override

src/main/java/io/fabric8/maven/docker/VolumeRemoveMojo.java

@@ -5,7 +5,6 @@
 import io.fabric8.maven.docker.config.VolumeConfiguration;
 import io.fabric8.maven.docker.service.ServiceHub;
 import io.fabric8.maven.docker.service.VolumeService;
-
 import org.apache.maven.plugin.MojoExecutionException;
 import org.apache.maven.plugins.annotations.LifecyclePhase;
 import org.apache.maven.plugins.annotations.Mojo;
@@ -15,7 +14,7 @@
  *
  *  @author Tom Burton
  */
-@Mojo(name = "volume-remove", defaultPhase = LifecyclePhase.POST_INTEGRATION_TEST)
+@Mojo(name = "volume-remove", defaultPhase = LifecyclePhase.POST_INTEGRATION_TEST, configurator = "fabric8-mojo-configurator")
 public class VolumeRemoveMojo extends AbstractDockerMojo {
 
    @Override