diff --git a/lib/galaxy/config/sample/job_conf.sample.yml b/lib/galaxy/config/sample/job_conf.sample.yml
index 849aabba1ee..85b3d12c638 100644
--- a/lib/galaxy/config/sample/job_conf.sample.yml
+++ b/lib/galaxy/config/sample/job_conf.sample.yml
@@ -586,6 +586,24 @@ execution:
       # argument by default. You can turn this off by setting singularity_cleanenv to `false`.
       #singularity_cleanenv: true
 
+      # Singularity by default inherits the PID namespace, this can give
+      # issues with multiprocessing, hence galaxy passes the `--pid` argument
+      # by default to isolate the PID namespace. You can turn this off by setting
+      # singularity_pid to `false`.
+      #singularity_pid: true
+
+      # Singularity by default inherits the IPC namespace, this can give
+      # issues with multiprocessing, hence Galaxy passes the `--ipc` argument
+      # by default to isolate the IPC namespace. You can turn this off by setting
+      # singularity_ipc to `false`.
+      #singularity_ipc: true
+
+      # Singularity mounts some directories, such as $HOME and $PWD by default.
+      # Setting singularity_contain to `true` disables this behaviour and only allows explicitly
+      # requested volumes to be mounted. This gives full control over
+      # the mounting behavior.
+      #singularity_contain: true
+
       # Pass extra arguments to the singularity exec command not covered by the
       # above options.
       #singularity_run_extra_arguments: ''
diff --git a/lib/galaxy/tool_util/deps/container_classes.py b/lib/galaxy/tool_util/deps/container_classes.py
index a2c05f0068b..723abb14933 100644
--- a/lib/galaxy/tool_util/deps/container_classes.py
+++ b/lib/galaxy/tool_util/deps/container_classes.py
@@ -590,6 +590,7 @@ class SingularityContainer(Container, HasDockerLikeVolumes):
             cleanenv=asbool(self.prop("cleanenv", singularity_util.DEFAULT_CLEANENV)),
             ipc=asbool(self.prop("ipc", singularity_util.DEFAULT_IPC)),
             pid=asbool(self.prop("pid", singularity_util.DEFAULT_PID)),
+            contain=asbool(self.prop("contain", singularity_util.DEFAULT_CONTAIN)),
             no_mount=self.prop("no_mount", singularity_util.DEFAULT_NO_MOUNT),
             **self.get_singularity_target_kwds(),
         )
diff --git a/lib/galaxy/tool_util/deps/singularity_util.py b/lib/galaxy/tool_util/deps/singularity_util.py
index 081c706fc3c..77ee94a0365 100644
--- a/lib/galaxy/tool_util/deps/singularity_util.py
+++ b/lib/galaxy/tool_util/deps/singularity_util.py
@@ -19,6 +19,7 @@ DEFAULT_SINGULARITY_COMMAND = "singularity"
 DEFAULT_CLEANENV = True
 DEFAULT_IPC = True
 DEFAULT_PID = True
+DEFAULT_CONTAIN = True
 DEFAULT_NO_MOUNT = ["tmp"]
 DEFAULT_SUDO = False
 DEFAULT_SUDO_COMMAND = "sudo"
@@ -78,6 +79,7 @@ def build_singularity_run_command(
     cleanenv: bool = DEFAULT_CLEANENV,
     ipc: bool = DEFAULT_IPC,
     pid: bool = DEFAULT_PID,
+    contain: bool = DEFAULT_CONTAIN,
     no_mount: Optional[List[str]] = DEFAULT_NO_MOUNT,
 ) -> str:
     volumes = volumes or []
@@ -96,11 +98,9 @@ def build_singularity_run_command(
     )
     command_parts.append("-s")
     command_parts.append("exec")
-    # Singularity mounts some directories, such as $HOME and $PWD by default.
-    # using --contain disables this behaviour and only allows explicitly
-    # requested volumes to be mounted. This gives fully full-control over
-    # the mounting behavior.
-    command_parts.append("--contain")
+
+    if contain:
+        command_parts.append("--contain")
     if working_directory:
         command_parts.extend(["--pwd", shlex.quote(working_directory)])
     if cleanenv: