CMake : Could not find OpenSSL.

[oox]

Please advise me.

$ docker build -t deepo1 -f Dockerfile.pytorch-py36-cu100 .

...
-- Looking for C++ include dlfcn.h
-- Looking for C++ include dlfcn.h - found
-- Checking whether dladdr works with this C++ compiler
-- Checking whether dladdr works with this C++ compiler - yes
-- Looking for C++ include cxxabi.h
-- Looking for C++ include cxxabi.h - found
-- Checking whether cxxabi works with this C++ compiler
-- Checking whether cxxabi works with this C++ compiler - yes
-- Checking whether CXX compiler has getloadavg
-- Checking whether CXX compiler has getloadavg - yes
-- Checking whether <ext/stdio_filebuf.h> is available
-- Checking whether <ext/stdio_filebuf.h> is available - yes
-- Performing Test HAVE_SOCKADDR_IN6_SIN6_ADDR
-- Performing Test HAVE_SOCKADDR_IN6_SIN6_ADDR - Success
-- Performing Test HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
-- Performing Test HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID - Success
-- Looking for connect in socket;dl
-- Looking for connect in socket;dl - not found
-- Looking for gethostbyname in c
-- Looking for gethostbyname in c - found
-- Looking for recv in network;dl
-- Looking for recv in network;dl - not found
-- Looking for gethostname
-- Looking for gethostname - found
-- Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the system variable OPENSSL_ROOT_DIR (missing: OPENSSL_CRYPTO_LIBRARY OPENSSL_INCLUDE_DIR)
CMake Error at Utilities/cmcurl/CMakeLists.txt:454 (message):
Could not find OpenSSL. Install an OpenSSL development package or
configure CMake with -DCMAKE_USE_OPENSSL=OFF to build without OpenSSL.

Configuring incomplete, errors occurred!
See also "/root/cmake/CMakeFiles/CMakeOutput.log".
See also "/root/cmake/CMakeFiles/CMakeError.log".

Error when bootstrapping CMake:
Problem while running initial CMake

[Keith Mattix II]

@oiotoxt If you add libssl-dev to the list of $APT_INSTALL packages, it will fix the error.