diff --git a/Dockerfile b/Dockerfile
index c6d22a4f..46393aab 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -86,7 +86,7 @@ COPY --from=enemizer /release/EnemizerCLI /tmp/EnemizerCLI
 
 # No release for arm architecture. Skip.
 RUN if [ "$TARGETARCH" = "amd64" ]; then \
-    cp /tmp/EnemizerCLI EnemizerCLI; \
+    cp -r /tmp/EnemizerCLI EnemizerCLI; \
     fi; \
     rm -rf /tmp/EnemizerCLI
 
@@ -94,5 +94,7 @@ RUN if [ "$TARGETARCH" = "amd64" ]; then \
 HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
     CMD curl -f http://localhost:${PORT:-80} || exit 1
 
+# Ensure no runtime ModuleUpdate.
 ENV SKIP_REQUIREMENTS_UPDATE=true
+
 ENTRYPOINT [ "python", "WebHost.py" ]
diff --git a/docs/deploy using containers.md b/docs/deploy using containers.md
index bb779001..6db38d44 100644
--- a/docs/deploy using containers.md	
+++ b/docs/deploy using containers.md	
@@ -9,9 +9,10 @@ Follow these steps to build and deploy a containerized instance of the web host
 
 What you'll need:
  * A container runtime engine such as:
-   * [Docker](https://www.docker.com/)
-   * [Podman](https://podman.io/)
+   * [Docker](https://www.docker.com/) (Version 23.0 or later)
+   * [Podman](https://podman.io/) (version 4.0 or later)
      * For running with rootless podman, you need to ensure all ports used are usable rootless, by default ports less than 1024 are root only. See [the official tutorial](https://github.com/containers/podman/blob/main/docs/tutorials/rootless_tutorial.md) for details.
+ * The Docker Buildx plugin (for Docker), as the Dockerfile uses `$TARGETARCH` for architecture detection. Follow [Docker's guide](https://docs.docker.com/build/buildx/install/). Verify with `docker buildx version`.
 
 Starting from the root repository directory, the standalone Archipelago image can be built and run with the command:
 `docker build -t archipelago .`