chore: update esp32 Docker build process

Remove redundant cleanup of dist directory and add cache mount for tools installation. This improves build efficiency and reduces unnecessary file deletions.

Signed-off-by: Chiho Sin <[email protected]>

Author: chihosin

Containerfile

@@ -117,7 +117,6 @@ RUN cd ${IDF_PATH} \
 RUN --mount=type=cache,target=/root/.cache/pip \
     --mount=type=cache,target=/opt/esp-idf-tools/dist \
     "${IDF_PATH}"/install.sh > /dev/null 2>&1 \
-    && rm -rf $IDF_TOOLS_PATH/dist \
     && bash -c "source ${IDF_PATH}/export.sh && pip3 install --upgrade minify-html jsmin sh requests-cache"
 
 RUN bash -c "source ${IDF_PATH}/export.sh && make -C ports/esp32 submodules && git repack -d"