- Add docstring to facilitate doc generation for `fx workspace docker…

…ize` command

- Rebased - 18/Nov/2024
- Updated as per latest code and comments
Signed-off-by: Shailesh Pant <shailesh.pant@intel.com>

openfl/interface/workspace.py

@@ -413,8 +413,38 @@ def export_() -> str:
 )
 @pass_context
 def dockerize_(context, save: bool, rebuild: bool, enclave_key: str, revision: str):
-    """Package current workspace as a TEE-ready Docker image."""
+    """
+    Package the current workspace as a Trusted Execution Environment (TEE)-ready Docker image.
+
+    This command exports the current workspace, builds an OpenFL base Docker image,
+    constructs the workspace Docker image, and optionally saves the workspace image as a tarball file.
+
+    Args:
+        context: The Click context object, representing the current command-line invocation context.
+        save (bool): If True, exports the Docker image as a `<workspace_name>.tar` file.
+        rebuild (bool): If True, rebuilds Docker images with the `--no-cache` option for a clean build.
+        enclave_key (str): Path to an enclave signing key. If not provided, a new key is auto-generated
+            within the workspace. Note that the key is not packaged with the image, allowing flexibility
+            to run without TEE later.
+        revision (str): Specifies the version of OpenFL source code to use when building the base Docker 
+            image. Format: `<OPENFL_GIT_URL>@<COMMIT_ID/BRANCH>`. If not specified, the default value 
+            in the `Dockerfile.base` is used, typically the latest stable release.
+
+    Steps Performed:
+        1. Exports the current workspace as an archive.
+        2. Builds the OpenFL base Docker image using the specified or default revision.
+        3. Builds the workspace Docker image, incorporating the exported workspace and signing key.
+        4. Optionally saves the workspace Docker image as a `.tar` file.
 
+    Raises:
+        FileNotFoundError: If the provided enclave key path does not exist.
+        RuntimeError: If any Docker commands fail during the build or export process.
+
+    Notes:
+        - If no enclave key is provided, a new one is generated using OpenSSL and saved in the workspace.
+        - The generated image is compatible with TEE environments but can be used outside of TEE if needed.
+        - Docker BuildKit is utilized for efficient and secure image builds.
+    """
     # Docker build options
     options = []
     options.append("--no-cache" if rebuild else "")