Verifying that tools do not assume sh is in /bin/sh

pom.xml

@@ -91,10 +91,10 @@
       <version>6.7</version>
     </dependency>
 
-    <dependency> <!-- OnceRetentionStrategy -->
+    <dependency>
       <groupId>org.jenkins-ci.plugins</groupId>
       <artifactId>durable-task</artifactId>
-      <version>1.28</version>
+      <version>1.30-SNAPSHOT</version> <!-- TODO https://github.com/jenkinsci/durable-task-plugin/pull/95 -->
     </dependency>
     <dependency>
       <groupId>org.jenkins-ci.plugins</groupId>

src/main/java/org/csanchez/jenkins/plugins/kubernetes/pipeline/ContainerExecDecorator.java

@@ -85,7 +85,7 @@ public class ContainerExecDecorator extends LauncherDecorator implements Seriali
     private static final String COOKIE_VAR = "JENKINS_SERVER_COOKIE";
 
     private static final Logger LOGGER = Logger.getLogger(ContainerExecDecorator.class.getName());
-    private static final String DEFAULT_SHELL="/bin/sh";
+    private static final String DEFAULT_SHELL = "sh";
 
     /**
      * stdin buffer size for commands sent to Kubernetes exec api. A low value will cause slowness in commands executed.

src/test/java/org/csanchez/jenkins/plugins/kubernetes/pipeline/KubernetesPipelineTest.java

@@ -191,6 +191,12 @@ public void runInPodWithDifferentShell() throws Exception {
         r.assertLogContains("/bin/bash: no such file or directory", b);
     }
 
+    @Test
+    public void bourneShellElsewhereInPath() throws Exception {
+        r.assertBuildStatusSuccess(r.waitForCompletion(b));
+        r.assertLogContains("+ ls -la /", b);
+    }
+
     @Test
     public void runInPodWithMultipleContainers() throws Exception {
         r.assertBuildStatusSuccess(r.waitForCompletion(b));

src/test/resources/org/csanchez/jenkins/plugins/kubernetes/pipeline/bourneShellElsewhereInPath.groovy

@@ -0,0 +1,7 @@
+podTemplate(label: 'bourneShellElsewhereInPath', containers: [containerTemplate(name: 'kaniko', image: 'gcr.io/kaniko-project/executor:debug', command: 'sleep', args: '99d')]) {
+    node('bourneShellElsewhereInPath') {
+        container(name: 'kaniko') {
+            sh 'ls -la /'
+        }
+    }
+}