Update Dockerfile

1 job for master in 6 seconds
Status Name Job ID Coverage
  Build
failed build_image #181

00:00:06

 
Name Stage Failure
failed
build_image Build
E: Unable to locate package libclang-common-9-dev
E: Unable to locate package libclang-9-dev
E: Unable to locate package libclang1-9
E: Unable to locate package clang-format-9
E: Unable to locate package clangd-9
E: Unable to locate package libllvm-9
E: Unable to locate package libfuzzer-9-dev
The command '/bin/sh -c apt install -y -qq clang clang-tools-9 libclang-common-9-dev libclang-9-dev libclang1-9 clang-format-9 clangd-9 libllvm-9 llvm llvm-dev llvm-runtime libfuzzer-9-dev' returned a non-zero code: 100
ERROR: Job failed: exit status 1