ci(docker): fix build setup for i686-unknown-linux-gnu

Author: rami3l

ci/docker/i686-unknown-linux-gnu/Dockerfile

@@ -1,12 +1,13 @@
 FROM rust-i686-unknown-linux-gnu
 
-# Building `aws-lc-rs` for Linux depends on `gcc-multilib`, `libclang` and `bindgen`.
-# See: https://aws.github.io/aws-lc-rs/requirements/linux
-RUN apt-get update && apt-get install -qy gcc-multilib libclang-dev \
-  && curl --proto '=https' --tlsv1.2 -LsSf https://github.com/rust-lang/rust-bindgen/releases/latest/download/bindgen-cli-installer.sh | sh \
+RUN yum upgrade -y \
+  # Building `aws-lc-rs` for Linux depends on `gcc-multilib`, `libclang` and `bindgen`.
+  # See: https://aws.github.io/aws-lc-rs/requirements/linux
+  && yum install -y glibc-devel.i686 clang-libs \
+  # Install `perl-IPC-Cmd` to make OpenSSL v3 happy.
+  # See: <https://github.com/sfackler/rust-openssl/issues/1550>
+     perl-IPC-Cmd \
+  # We have to use manual installation here, otherwise the installation script will fail with
+  # 'System glibc version (`2.17') is too old; checking alternatives'.
+  && cargo install --force --locked bindgen-cli \
   && mv $HOME/.cargo/bin/bindgen /usr/bin
-
- # Install `perl-IPC-Cmd` to make OpenSSL v3 happy.
- # See: <https://github.com/sfackler/rust-openssl/issues/1550>
- RUN yum upgrade -y && \
-     yum install -y perl-IPC-Cmd