Move pipeline working dir from /app to /working.

This should make it easier to ignore for when the pipeline
working directory is not the main code you want to run.

This happens e.g. when running tests inside your own just-built
container and similar. /app is too often already in use.

src/main/java/no/h_nh/docker_step/utils/DockerUtils.java

@@ -136,9 +136,9 @@ public static long runScript(String image, String script, String workingDir,
       for (Map.Entry<String, String> entry : envVars.entrySet())
         env.add(entry.getKey() + "=" + entry.getValue());
       final ContainerConfig config = ContainerConfig.builder()
-              .image(image).cmd(script).workingDir("/app").user(user).env(env)
+              .image(image).cmd(script).workingDir("/working").user(user).env(env)
               .attachStdin(true).attachStdout(true).attachStderr(true)
-              .hostConfig(HostConfig.builder().appendBinds(workingDir + ":/app").build())
+              .hostConfig(HostConfig.builder().appendBinds(workingDir + ":/working").build())
               .build();
       final ContainerCreation container = getDockerClient().createContainer(config);
 

src/test/java/no/h_nh/docker_step/utils/DockerUtilsTest.java

@@ -133,8 +133,6 @@ public void startService() throws Exception {
         ArgumentCaptor<ContainerConfig> containerConfig = ArgumentCaptor.forClass(ContainerConfig.class);
         verify(dockerClient).createContainer(containerConfig.capture(), anyString());
         assertEquals("Image wrong", "busybox:latest", containerConfig.getValue().image());
-        //assertEquals("Working dir incorrect", "/app", containerConfig.getValue().workingDir());
-        //assertEquals("Bind mount not correct", "/some-dir:/app", containerConfig.getValue().hostConfig().binds().get(0));
         assertThat("Environment vars not correct", containerConfig.getValue().env(),
                 hasItems("ENV1=value1", "ENV2=value2"));
     }
@@ -192,8 +190,8 @@ public void runScript() throws Exception {
         ArgumentCaptor<ContainerConfig> containerConfig = ArgumentCaptor.forClass(ContainerConfig.class);
         verify(dockerClient).createContainer(containerConfig.capture());
         assertEquals("Image wrong", "busybox:latest", containerConfig.getValue().image());
-        assertEquals("Working dir incorrect", "/app", containerConfig.getValue().workingDir());
-        assertEquals("Bind mount not correct", "/some-dir:/app", containerConfig.getValue().hostConfig().binds().get(0));
+        assertEquals("Working dir incorrect", "/working", containerConfig.getValue().workingDir());
+        assertEquals("Bind mount not correct", "/some-dir:/working", containerConfig.getValue().hostConfig().binds().get(0));
         assertThat("Environment vars not correct", containerConfig.getValue().env(),
                 hasItems("ENV1=value1", "ENV2=value2"));
     }