nginx: fix build

Author: DavidKorczynski

projects/nginx/Dockerfile

@@ -16,8 +16,8 @@
 
 FROM gcr.io/oss-fuzz-base/base-builder
 
-RUN apt-get update && apt-get install -y libpcre3-dev zlib1g-dev mercurial ninja-build cmake liblzma-dev libz-dev binutils libtool
-RUN hg clone http://hg.nginx.org/nginx/
+RUN apt-get update && apt-get install -y libpcre3-dev zlib1g-dev ninja-build cmake liblzma-dev libz-dev binutils libtool
+RUN git clone --depth 1 https://github.com/nginx/nginx.git
 RUN git clone --depth 1 https://github.com/google/libprotobuf-mutator.git
 RUN git clone --depth 1 https://github.com/google/fuzzer-test-suite
 RUN (mkdir LPM && cd LPM && cmake ../libprotobuf-mutator -GNinja -DLIB_PROTO_MUTATOR_DOWNLOAD_PROTOBUF=ON -DLIB_PROTO_MUTATOR_TESTING=OFF -DCMAKE_BUILD_TYPE=Release && ninja)