Build ccache after the tools are configured

.devcontainer/Dockerfile

@@ -35,12 +35,6 @@ RUN python3 -m pip --no-cache-dir install \
 # Set default generator for CMake to Ninja
 ENV CMAKE_GENERATOR="Ninja"
 
-# Install ccache from source for a recent version
-RUN wget -qO - https://github.com/ccache/ccache/archive/refs/tags/v${CCACHE_VERSION}.tar.gz | tar xz -C /tmp \
- && cmake -DCMAKE_BUILD_TYPE=Release -S /tmp/ccache-${CCACHE_VERSION} -B /tmp/ccache-${CCACHE_VERSION}/build \
- && cmake --build /tmp/ccache-${CCACHE_VERSION} --target install \
- && rm -rf /tmp/ccache-${CCACHE_VERSION}
-
 # Install clang toolchain
 COPY .devcontainer/clang-${CLANG_VERSION}/apt-requirements.json /tmp/apt-requirements-clang.json
 RUN wget -qO - https://apt.llvm.org/llvm-snapshot.gpg.key | gpg --dearmor -o /usr/share/keyrings/llvm-snapshot-keyring.gpg \
@@ -90,11 +84,17 @@ RUN batstmp="$(mktemp -d /tmp/bats-core-${BATS_VERSION}.XXXX)" \
 # Install xwin
 RUN wget -qO - "https://github.com/Jake-Shadle/xwin/releases/download/${XWIN_VERSION}/xwin-${XWIN_VERSION}-$(uname -m)-unknown-linux-musl.tar.gz" | tar -xzv -C /usr/local/bin --strip-components=1 "xwin-${XWIN_VERSION}-$(uname -m)-unknown-linux-musl/xwin"
 
-# Update all tools alternatives to the correct version
+# Update all tool alternatives to the correct version
 RUN update-alternatives --install /usr/bin/c++ c++ /usr/bin/g++-${GCC_VERSION} 20 \
  && update-alternatives --install /usr/bin/cc cc /usr/bin/gcc-${GCC_VERSION} 20 \
  && update-alternatives --install /usr/bin/gcov gcov /usr/bin/gcov-${GCC_VERSION} 10 \
  && update-alternatives --install /usr/bin/iwyu iwyu /usr/local/bin/include-what-you-use 10 \
  && update-alternatives --install /usr/bin/mull-runner mull-runner /usr/local/bin/mull-runner-${CLANG_VERSION} 10 \
  && update-alternatives --install /usr/lib/mull-ir-frontend mull-ir-frontend /usr/local/lib/mull-ir-frontend-${CLANG_VERSION} 10 \
  && update-alternatives --install /usr/bin/python python /usr/bin/python3 10
+
+# Install ccache from source for a recent version
+RUN wget -qO - https://github.com/ccache/ccache/archive/refs/tags/v${CCACHE_VERSION}.tar.gz | tar xz -C /tmp \
+ && cmake -DCMAKE_BUILD_TYPE=Release -S /tmp/ccache-${CCACHE_VERSION} -B /tmp/ccache-${CCACHE_VERSION}/build \
+ && cmake --build /tmp/ccache-${CCACHE_VERSION} --target install \
+ && rm -rf /tmp/ccache-${CCACHE_VERSION}