docker clang8 fix

Author: Yevgeny Pats

docker/debian/stretch/clang8/Dockerfile

@@ -1,7 +1,15 @@
-FROM docker.pkg.github.com/fuzzitdev/fuzzit/debian-llvm8:latest
+FROM debian:stretch
 
 LABEL maintainer="Fuzzit.dev, inc."
 
+RUN apt-get -qqy update && apt-get install -y wget gnupg2 unzip
+
+RUN echo "deb http://apt.llvm.org/stretch/ llvm-toolchain-stretch-8 main" >> /etc/apt/sources.list
+RUN echo "deb-src http://apt.llvm.org/stretch/ llvm-toolchain-stretch-8 main" >> /etc/apt/sources.list
+RUN wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key| apt-key add -
+RUN apt-get update && apt-get install -y libllvm-8-ocaml-dev libllvm8 llvm-8 llvm-8-dev llvm-8-doc llvm-8-examples llvm-8-runtime
+RUN ln -s /usr/lib/llvm-8/bin/llvm-symbolizer /bin/llvm-symbolizer
+
 RUN apt-get -qqy update && apt-get install -y git clang-8 libclang-common-8-dev libclang-8-dev libclang1-8 clang-format-8 cmake
 
 WORKDIR /app