feat(docker): set link and path for toolchains

Author: craftslab

Dockerfile

@@ -4,7 +4,8 @@ USER aosp
 WORKDIR /home/aosp
 RUN mkdir -p .distbuild/boong/bin && \
     mkdir -p .distbuild/prebuilts && \
-    mkdir -p .distbuild/workspace
+    mkdir -p .distbuild/workspace && \
+    ln -s /home/aosp/.distbuild/prebuilts /home/aosp/.distbuild/workspace/prebuilts
 
 USER aosp
 WORKDIR /home/aosp
@@ -28,4 +29,5 @@ RUN pushd build && \
     sudo rm -rf build
 
 ENV PATH=/home/aosp/.distbuild/boong/bin:$PATH
+ENV PATH=/home/aosp/.distbuild/prebuilts/clang/host/linux-x86/clang-3289846/bin:$PATH
 CMD ["worker", "--listen-address=:39090", "--workspace-path=/home/aosp/.distbuild/workspace"]