[ci][docker] Use sccache everywhere by default (#11267)

This adds `/opt/sccache` to the PATH of each of the CI docker images so when cmake looks for a C compiler it will pick up the sccache wrapper by default. This fixes some issues where compiler invocations weren't being run though sccache. With this approach the invoker doesn't need to do anything specific to set up sccache.

This will require a follow up PR to update the Docker images and remove some of the sccache logic in `task_build.py`

Co-authored-by: driazati <[email protected]>

Author: driazati

docker/Dockerfile.ci_arm

@@ -39,6 +39,7 @@ ENV PATH $PATH:$CARGO_HOME/bin
 # sccache
 COPY install/ubuntu_install_sccache.sh /install/ubuntu_install_sccache.sh
 RUN bash /install/ubuntu_install_sccache.sh
+ENV PATH /opt/sccache:$PATH
 
 COPY install/ubuntu_install_llvm.sh /install/ubuntu_install_llvm.sh
 RUN bash /install/ubuntu_install_llvm.sh

docker/Dockerfile.ci_cpu

@@ -145,6 +145,7 @@ RUN bash /install/ubuntu_install_paddle.sh
 # sccache
 COPY install/ubuntu_install_sccache.sh /install/ubuntu_install_sccache.sh
 RUN bash /install/ubuntu_install_sccache.sh
+ENV PATH /opt/sccache:$PATH
 
 # Libxsmm deps
 COPY install/ubuntu_install_libxsmm.sh /install

docker/Dockerfile.ci_gpu

@@ -132,6 +132,7 @@ RUN bash /install/ubuntu_install_papi.sh "cuda rocm"
 # sccache
 COPY install/ubuntu_install_sccache.sh /install/ubuntu_install_sccache.sh
 RUN bash /install/ubuntu_install_sccache.sh
+ENV PATH /opt/sccache:$PATH
 
 # Environment variables
 ENV PATH=/usr/local/nvidia/bin:${PATH}

docker/Dockerfile.ci_hexagon

@@ -61,11 +61,13 @@ COPY install/ubuntu_install_hexagon.sh /install/ubuntu_install_hexagon.sh
 RUN bash /install/ubuntu_install_hexagon.sh
 ENV CLANG_LLVM_HOME /opt/clang-llvm
 ENV LD_LIBRARY_PATH $LD_LIBRARY_PATH:/opt/clang-llvm/lib
+ENV PATH /opt/clang-llvm/bin:$PATH
 ENV HEXAGON_TOOLCHAIN "${HEXAGON_SDK_PATH}/tools/HEXAGON_Tools/8.5.08/Tools"
 
 # sccache
 COPY install/ubuntu_install_sccache.sh /install/ubuntu_install_sccache.sh
 RUN bash /install/ubuntu_install_sccache.sh
+ENV PATH /opt/sccache:$PATH
 
 # TensorFlow deps
 COPY install/ubuntu_install_tensorflow.sh /install/ubuntu_install_tensorflow.sh

docker/Dockerfile.ci_i386

@@ -65,3 +65,4 @@ RUN bash /install/ubuntu_install_verilator.sh
 # sccache
 COPY install/ubuntu_install_sccache.sh /install/ubuntu_install_sccache.sh
 RUN bash /install/ubuntu_install_sccache.sh
+ENV PATH /opt/sccache:$PATH

docker/Dockerfile.ci_qemu

@@ -69,6 +69,7 @@ RUN bash /install/ubuntu_install_tflite.sh
 # sccache
 COPY install/ubuntu_install_sccache.sh /install/ubuntu_install_sccache.sh
 RUN bash /install/ubuntu_install_sccache.sh
+ENV PATH /opt/sccache:$PATH
 
 # Zephyr SDK deps
 COPY install/ubuntu_install_zephyr.sh /install/ubuntu_install_zephyr.sh

docker/Dockerfile.ci_wasm

@@ -61,3 +61,4 @@ ENV LLVM=${EMSDK}/upstream/bin
 # sccache
 COPY install/ubuntu_install_sccache.sh /install/ubuntu_install_sccache.sh
 RUN bash /install/ubuntu_install_sccache.sh
+ENV PATH /opt/sccache:$PATH

docker/install/ubuntu_install_sccache.sh

@@ -26,6 +26,8 @@ cargo install sccache
 mkdir /opt/sccache
 ln "$(which sccache)" /opt/sccache/cc
 ln "$(which sccache)" /opt/sccache/c++
+ln "$(which sccache)" /opt/sccache/clang
+ln "$(which sccache)" /opt/sccache/clang++
 
 # make rust usable by all users after install during container build
 chmod -R a+rw /opt/rust