diff --git a/jammy-amd64-tf-a-build/Dockerfile b/jammy-amd64-tf-a-build/Dockerfile
index 8ff7e92..d26a0be 100644
--- a/jammy-amd64-tf-a-build/Dockerfile
+++ b/jammy-amd64-tf-a-build/Dockerfile
@@ -109,9 +109,12 @@
     apt clean ;\
     rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
+# Install fixed Rust version and a nightly toolchain
 RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | \
         sh -s -- --default-toolchain 1.88.0 -y && \
         rustup install nightly
+
+# Install required cargo packages
 RUN set -ex ;\
     cargo install --locked 'tokei@12.1.*' ;\
     cargo install --locked cargo-binutils ;\