Work around armv7 build issues

Rustup is not available on armv7, so we install rust manually.

We also add some missing dependencies

Author: justinmichaud

images/wkdev_sdk/Containerfile

@@ -84,7 +84,8 @@ ENV RUSTUP_HOME="/opt/rust" \
     CARGO_HOME="/opt/rust" \
     PATH="/opt/rust/bin:${PATH}"
 
-RUN rustup default stable && \
+RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y && \
+    rustup default stable && \
     rustup component remove rust-docs && \
     cargo install --root /usr/local --version 0.9.1 --locked sccache && \
     cargo install --root /usr/local cargo-c

images/wkdev_sdk/required_system_packages/05-armv7-jhbuild.lst

@@ -0,0 +1,2 @@
+# Needed for jhbuild on armv7
+libyaml-dev desktop-file-utils