add: homebrew in linux

.devcontainer/Dockerfile

@@ -1,4 +1,7 @@
-FROM mcr.microsoft.com/devcontainers/rust:1-1-bullseye
+# Use buster on Intel for testing Homebrew on Linux.
+# https://hub.docker.com/_/microsoft-devcontainers-rust
+# Please note that Homebrew on Linux does not support ARM processors.
+FROM --platform=linux/x86_64 mcr.microsoft.com/devcontainers/rust:1.0.9-buster
 
 # Clang 15
 RUN apt-get update \
@@ -10,11 +13,16 @@ RUN apt-get update \
     wget \
     software-properties-common \
   && wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key|apt-key add - \
-  && apt-add-repository "deb http://apt.llvm.org/bullseye/ llvm-toolchain-bullseye-15 main" \
+  && apt-add-repository "deb http://apt.llvm.org/buster/ llvm-toolchain-buster-15 main" \
   && apt-get update \
   && apt-get install -y clang-15 lldb-15 lld-15 \
   && apt-get clean \
   && rm -rf /var/lib/apt/lists/*
 
 RUN ln -s /usr/bin/clang-15 /usr/bin/clang \
   && ln -s /usr/bin/clang++-15 /usr/bin/clang++
+
+# Homebrew for Linux
+USER vscode
+RUN /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
+ENV PATH=${PATH}:/home/linuxbrew/.linuxbrew/bin:/home/linuxbrew/.linuxbrew/sbin/