Merge pull request #6479 from Project-OSRM/dl_fix_cmake_warning

Fix CMake warning

Author: DennisOSRM

cmake/FindLua.cmake

@@ -36,7 +36,10 @@
 # This is because, the lua location is not standardized and may exist in
 # locations other than lua/
 
-include(FindPkgConfig)
+if(NOT PKG_CONFIG_FOUND)
+  include(CMakeFindDependencyMacro)
+  find_dependency(PkgConfig)
+endif()
 
 unset(_lua_include_subdirs)
 unset(_lua_library_names)

docker/Dockerfile

@@ -5,7 +5,7 @@ RUN mkdir -p /src  && mkdir -p /opt
 
 RUN apt-get update && \
     apt-get -y --no-install-recommends install ca-certificates cmake make git gcc g++ libbz2-dev libxml2-dev wget \
-    libzip-dev libboost1.74-all-dev lua5.4 liblua5.4-dev -o APT::Install-Suggests=0 -o APT::Install-Recommends=0
+    libzip-dev libboost1.74-all-dev lua5.4 liblua5.4-dev pkg-config -o APT::Install-Suggests=0 -o APT::Install-Recommends=0
 
 RUN NPROC=${BUILD_CONCURRENCY:-$(nproc)} && \
     ldconfig /usr/local/lib && \