containers: change the mode bits of --script argument

The file passed to --script argument is made an executable file
before mounting it in the container.

The documentation is updated so that users don't have to manually
perform this change.

Signed-off-by: Abdulwasiu Apalowo <abdulwasiuapalowo@gmail.com>

2 files changed, 7 insertions, 9 deletions

diff --git a/docs/containers.rst b/docs/containers.rst
index abaa406..5873b12 100644
--- a/docs/containers.rst
+++ b/docs/containers.rst
@@ -82,12 +82,8 @@ home directory inside the container, and the working directory is
 switched to the home directory to make execution easier.
 
 The script file is mounted to the *script* file in the home directory
-inside the container. Ensure the file is an executable by running:
-
-::
-
-    chmod +x <path_to_your_script>
-
+inside the container. The script is made executable before the mount is
+performed.
 
 It can also be used as a standalone script (e.g an ``echo hello" script``).
 
diff --git a/lcitool/containers/containers.py b/lcitool/containers/containers.py
index e026c22..0d5041b 100644
--- a/lcitool/containers/containers.py
+++ b/lcitool/containers/containers.py
@@ -194,9 +194,11 @@ class Container(ABC):
         ]
 
         if script:
-            script_file = shutil.copy2(
-                script, Path(tempdir, "script")
-            )
+            script_file = Path(shutil.copy2(script, Path(tempdir, "script")))
+
+            # make the script an executable file
+            script_file.chmod(script_file.stat().st_mode | 0o111)
+
             script_mount = f"{script_file}:{user_home}/script:z"
             engine_args_.extend([
                 "--volume", script_mount