Install error

[vkazmirchuk]

When trying to install the server in Docker with the command:
./docker/conference/build_server.sh -p ~/testApp -i testapp_img

Getting an error:

Following targets will be built:
 video-mixer-sw
 video-transcoder-sw
 video-analyzer-sw
 internal-io
 logger
 media-frame-multicaster
 audio
 webrtc-conn
 webrtc-frame
 avstream
 sip
 video-mixer-msdk
 video-transcoder-msdk
Building addon - video-mixer-sw
gyp ERR! configure error
gyp ERR! stack Error: ENOENT: no such file or directory, mkdir '/root/.cache/node-gyp/8.15.0'
gyp ERR! System Linux 4.15.0-50-generic
gyp ERR! command "/usr/local/bin/node" "/usr/local/bin/node-gyp" "rebuild" "-j" "2" "--loglevel=error"
gyp ERR! cwd /home/owt-server/source/agent/video/videoMixer/videoMixer_sw
gyp ERR! node -v v8.15.0
gyp ERR! node-gyp -v v7.0.0
gyp ERR! not ok
child_process.js:650
    throw err;
    ^

Error: Command failed: node-gyp rebuild -j 2 --loglevel=error
    at checkExecSyncError (child_process.js:607:13)
    at execSync (child_process.js:647:13)
    at buildTarget (/home/owt-server/scripts/build.js:130:5)
    at buildList.map (/home/owt-server/scripts/build.js:161:10)
    at Array.map (<anonymous>)
    at Object.<anonymous> (/home/owt-server/scripts/build.js:156:23)
    at Module._compile (module.js:653:30)
    at Object.Module._extensions..js (module.js:664:10)
    at Module.load (module.js:566:32)
    at tryModuleLoad (module.js:506:12)
ERROR: Service 'owt-server' failed to build: The command '/bin/sh -c cd /home && git clone --depth=1 -b ${OWT_BRANCH} ${OWT_SDK_REPO} && cd owt-client-javascript/scripts && npm install && grunt  &&     mkdir ${SERVER_PATH}/third_party/quic-lib &&     export LD_LIBRARY_PATH=/usr/local/lib/x86_64-linux-gnu &&     cd ${SERVER_PATH}/third_party/quic-lib && wget https://github.com/open-webrtc-toolkit/owt-deps-quic/releases/download/v0.1/dist.tgz && tar xzf dist.tgz &&     cd ${SERVER_PATH} && export PKG_CONFIG_PATH=/usr/local/lib/x86_64-linux-gnu/pkgconfig && ./scripts/build.js -t mcu-all -r -c &&     ./scripts/pack.js -t all --install-module --no-pseudo --app-path /home/owt-client-javascript/dist/samples/conference' returned a non-zero code: 1```