Add Rust aarch64 toolchain to Docker container

contrib/BLAKE3

@@ -1 +1 @@
-Subproject commit 0009b91cfaa44171ce869d64037b20a2aef1525c
+Subproject commit 74f7fa1652e413fb7b86a86980cfff00a65fef7a

docker/packager/deb/Dockerfile

@@ -59,10 +59,20 @@ RUN apt-get update \
         pixz \
         pkg-config \
         tzdata \
-        rustc \
-        cargo \
         --yes --no-install-recommends
 
+# Rust toolchain
+RUN curl https://sh.rustup.rs -sSf | bash -s -- -y
+ENV PATH="/root/.cargo/bin:${PATH}"
+RUN rustup target add aarch64-unknown-linux-gnu && \
+    apt-get install \
+        gcc-aarch64-linux-gnu \
+        build-essential \
+        libc6 \
+        libc6-dev \
+        --yes
+
+
 # NOTE: Seems like gcc-11 is too new for ubuntu20 repository
 RUN add-apt-repository ppa:ubuntu-toolchain-r/test --yes \
     && apt-get update \