diff --git a/docker/kurento-media-server/Dockerfile b/docker/kurento-media-server/Dockerfile
index 068e4b9f..95b1b6e6 100644
--- a/docker/kurento-media-server/Dockerfile
+++ b/docker/kurento-media-server/Dockerfile
@@ -1,423 +1,424 @@
 FROM fedora:31
 
 MAINTAINER Jeroen van Meeuwen <vanmeeuwen@kolabsys.com>
 
 ENV CFLAGS="-O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -fasynchronous-unwind-tables -fstack-clash-protection -flto"
 ENV CXXFLAGS="${CFLAGS}"
 ENV LDFLAGS="-Wl,-z,relro -Wl,--as-needed  -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -flto -fuse-linker-plugin"
 ENV CC="gcc"
 ENV CXX="g++"
 ENV AR="/bin/gcc-ar"
 ENV RANLIB="/bin/gcc-ranlib"
 ENV NM="/bin/gcc-nm"
 ENV CMAKE_CXX_ARCHIVE_CREATE="<CMAKE_AR> qcs <TARGET> <LINK_FLAGS> <OBJECTS>"
 ENV OPENSSL_CONF=''
 ENV GST_DEBUG="*:3,Kurento*:5,kms*:5,sdp*:4,webrtc*:5,*rtpendpoint:5,rtp*handler:5,rtpsynchronizer:5,agnosticbin:4,GST_ELEMENT_FACTORY:7"
 
 ARG CLEAN=1
 
 ARG CMAKEOPTS="-DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/ -DCMAKE_INSTALL_SYSCONFDIR=/etc/ -DCMAKE_MODULES_INSTALL_DIR=/usr/share/cmake/Modules/ -DBUILD_SHARED_LIBS=ON -DCMAKE_AR=${AR} -DCMAKE_CXX_ARCHIVE_FINISH=true -DCMAKE_MODULES_INSTALL_DIR=/usr/share/cmake/Modules/ -DGENERATE_TESTS=FALSE -DDISABLE_TESTS=TRUE"
 ARG GST_BASE_VERSION="1.8.1-1kurento2"
 ARG GST_VERSION="1.8.1"
 ARG KURENTO_MEDIA_SERVER_VERSION="6.15.0"
 ARG KURENTO_CMAKE_VERSION="6.15.0"
 ARG KURENTO_CORE_VERSION="6.15.0"
 ARG KURENTO_ELEMENTS_VERSION="6.15.0"
 ARG KURENTO_FILTERS_VERSION="6.15.0"
 ARG KURENTO_MODULE_CREATOR_VERSION="6.15.0"
 ARG KURENTO_JSONCPP_VERSION="1.6.4"
 ARG KURENTO_JSONRPC_VERSION="6.15.0"
 ARG OPENCV_VERSION="3.4.10"
 
 RUN rpm -Uvh https://mirrors.rpmfusion.org/free/fedora/rpmfusion-free-release-31.noarch.rpm && \
     rpm -Uvh https://mirrors.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-31.noarch.rpm && \
     dnf -y install \
         autoconf \
         automake \
         bison \
         boost-devel \
         cmake \
         coreutils \
         dnf-plugins-core \
         ffmpeg \
         ffmpeg-devel \
         flac-devel \
         flex \
         gcc-c++ \
         gettext-devel \
         git \
         glibmm24-devel \
         gsl-devel \
         gtk-doc \
         libevent-devel \
         libjpeg-devel \
         libmicrodns-devel \
         libpng-devel \
         libsigc++20-devel \
         libsoup-devel \
         libsrtp-devel \
         libtool \
         libunwind-devel \
         libuuid-devel \
         libvisual-devel \
         libvpx-devel \
         make \
         maven \
         meson \
         net-tools \
         opencl-headers \
         opencv-devel \
         # not available on ppc64le? \
         #openni-devel \
         openssl-devel \
         opus-devel \
         patch \
         redhat-rpm-config \
         spandsp-devel \
         usrsctp-devel \
         vim-enhanced \
         webrtc-audio-processing-devel \
         websocketpp-devel \
         x264-devel \
         x265-devel && \
     # meson in module older than meson in updates \
     dnf module -y disable meson && \
     dnf -y update meson && \
     rpm -e --nodeps gstreamer1 gstreamer1-plugins-base && \
     dnf -y clean all && \
     mkdir -p /src/ && \
     if [ "${GST_BASE_VERSION}" == "1.8.1-1kurento2" ]; then \
         git clone https://github.com/Kurento/gstreamer.git /src/gstreamer.git && \
             cd /src/gstreamer.git/ && \
             sed -i \
                 -e 's|git://anongit.freedesktop.org/gstreamer/common.*$|https://anongit.freedesktop.org/git/gstreamer/common.git/|g' \
                 .gitmodules && \
             git submodule init && \
             git submodule update && \
             #sed -r -i \
             #    -e 's/^GST_API_VERSION=.*$/GST_API_VERSION=1.0/g' \
             #    configure.ac && \
             autopoint --force && \
             autoreconf -vi && \
             ./configure --prefix=/usr --sysconfdir=/etc --libdir=/usr/lib64 --disable-failing-tests --disable-static --disable-static-plugins --enable-shared && \
             make -j $(nproc) VERBOSE=1 && \
             make install VERBOSE=1 ; \
     else \
         git clone -b ${GST_BASE_VERSION} https://gitlab.freedesktop.org/gstreamer/gstreamer.git /src/gstreamer.git && \
             cd /src/gstreamer.git/ && \
             if [ -f 'meson.build' ]; then \
                 meson build --prefix=/usr && \
                 ninja -C build install ; \
             else \
                 sed -i \
                     -e 's|git://anongit.freedesktop.org/gstreamer/common.*$|https://anongit.freedesktop.org/git/gstreamer/common.git/|g' \
                     .gitmodules && \
                 git submodule init && \
                 git submodule update && \
                 autopoint --force && \
                 autoreconf -vi && \
                 ./configure --prefix=/usr --sysconfdir=/etc --libdir=/usr/lib64 --disable-failing-tests --disable-static --disable-static-plugins --enable-shared && \
                 make -j $(nproc) VERBOSE=1 && \
                 make install VERBOSE=1 ; \
             fi ; \
     fi && \
     git clone https://gitlab.freedesktop.org/libnice/libnice.git /src/libnice.git && \
         cd /src/libnice.git && \
         sed -r -i \
             -e 's/-(base|check)-1\.0/-\1-1.5/g' \
             -e 's/gstreamer-1\.0/gstreamer-1.5/g' \
             meson.build \
             gst/meson.build \
             tests/meson.build && \
         meson build --prefix=/usr && \
         ninja -C build install && \
     git clone -b ${GST_VERSION} https://gitlab.freedesktop.org/gstreamer/gst-plugins-base.git /src/gst-plugins-base.git && \
         cd /src/gst-plugins-base.git/ && \
         if [ -f 'meson.build' ]; then \
             meson build --prefix=/usr && \
             ninja -C build install ; \
         else \
             sed -i \
                 -e 's|git://anongit.freedesktop.org/gstreamer/common.*$|https://anongit.freedesktop.org/git/gstreamer/common.git/|g' \
                 .gitmodules && \
             git submodule init && \
             git submodule update && \
             sed -r -i \
                 -e 's/^GST_API_VERSION.*$/GST_API_VERSION=1.5/g' \
                 configure.ac && \
             sed -r -i \
                 -e 's/^DOMAIN.*$/DOMAIN = gst-plugins-base-1.5/g' \
                 po/Makevars && \
             autopoint --force && \
             autoreconf -vi && \
             sed -r -i \
                 -e 's/@GST_API_VERSION@\.1/@GST_API_VERSION@/g' \
                 tools/Makefile.in && \
             ./configure --prefix=/usr --sysconfdir=/etc --libdir=/usr/lib64 --disable-failing-tests --disable-static --disable-static-plugins --enable-shared && \
             make -j $(nproc) VERBOSE=1 && \
             make install VERBOSE=1 ; \
         fi && \
     git clone -b ${GST_VERSION} https://gitlab.freedesktop.org/gstreamer/gst-plugins-good.git /src/gst-plugins-good.git && \
         cd /src/gst-plugins-good.git/ && \
         if [ -f 'meson.build' ]; then \
             meson build --prefix=/usr && \
             ninja -C build install ; \
         else \
             sed -i \
                 -e 's|git://anongit.freedesktop.org/gstreamer/common.*$|https://anongit.freedesktop.org/git/gstreamer/common.git/|g' \
                 .gitmodules && \
             git submodule init && \
             git submodule update && \
             sed -r -i \
                 -e 's/^GST_API_VERSION.*$/GST_API_VERSION=1.5/g' \
                 configure.ac && \
             sed -r -i \
                 -e 's/^DOMAIN.*$/DOMAIN = gst-plugins-good-1.5/g' \
                 po/Makevars && \
             autopoint --force && \
             autoreconf -vi && \
             sed -i \
                 -e '/^#define .* gint64/d' \
                 -e '/^#define .* guint64/d' \
                 sys/v4l2/ext/types-compat.h && \
             sed -i \
                 -e 's/__s64/gint64/g' \
                 -e 's/__u64/guint64/g' \
                 sys/v4l2/ext/videodev2.h && \
             ./configure --prefix=/usr --sysconfdir=/etc --libdir=/usr/lib64 --disable-failing-tests --disable-static --disable-static-plugins --enable-shared && \
             make -j $(nproc) VERBOSE=1 && \
             make install VERBOSE=1 ; \
         fi && \
     git clone https://github.com/kanarip/gst-plugins-bad.git /src/gst-plugins-bad.git && \
         cd /src/gst-plugins-bad.git/ && \
         if [ -f 'meson.build' ]; then \
             meson build --prefix=/usr && \
             ninja -C build install ; \
         else \
             sed -i \
                 -e 's|git://anongit.freedesktop.org/gstreamer/common.*$|https://anongit.freedesktop.org/git/gstreamer/common.git/|g' \
                 .gitmodules && \
             git submodule init && \
             git submodule update && \
             sed -r -i \
                 -e 's/^GST_API_VERSION.*$/GST_API_VERSION=1.5/g' \
                 -e 's/gstreamer-allocators-1.0/gstreamer-allocators-1.5/g' \
                 configure.ac && \
             sed -r -i \
                 -e 's/gstaudio-1.0/gstaudio-1.5/g' \
                 -e 's/gstvideo-1.0/gstvideo-1.5/g' \
                 gst/festival/Makefile.am \
                 gst/ivtc/Makefile.am \
                 gst/yadif/Makefile.am && \
             sed -r -i \
                 -e 's/^DOMAIN.*$/DOMAIN = gst-plugins-bad-1.5/g' \
                 po/Makevars && \
             autopoint --force && \
             autoreconf -vi && \
             #./configure --prefix=/usr --sysconfdir=/etc --libdir=/usr/lib64 --disable-failing-tests --disable-dtls && \
             ./configure --prefix=/usr --sysconfdir=/etc --libdir=/usr/lib64 --disable-failing-tests --disable-static --disable-static-plugins --enable-shared && \
             make -j $(nproc) VERBOSE=1 && \
             make install VERBOSE=1 ; \
         fi && \
     git clone -b ${GST_VERSION} https://gitlab.freedesktop.org/gstreamer/gst-plugins-ugly.git /src/gst-plugins-ugly.git && \
         cd /src/gst-plugins-ugly.git/ && \
         if [ -f 'meson.build' ]; then \
             meson build --prefix=/usr && \
             ninja -C build install ; \
         else \
             sed -i \
                 -e 's|git://anongit.freedesktop.org/gstreamer/common.*$|https://anongit.freedesktop.org/git/gstreamer/common.git/|g' \
                 .gitmodules && \
             git submodule init && \
             git submodule update && \
             sed -r -i \
                 -e 's/^GST_API_VERSION.*$/GST_API_VERSION=1.5/g' \
                 configure.ac && \
             sed -r -i \
                 -e 's/^DOMAIN.*$/DOMAIN = gst-plugins-ugly-1.5/g' \
                 po/Makevars && \
             autopoint --force && \
             autoreconf -vi && \
             ./configure --prefix=/usr --sysconfdir=/etc --libdir=/usr/lib64 --disable-failing-tests --disable-x264 --disable-static --disable-static-plugins --enable-shared && \
             make -j $(nproc) VERBOSE=1 && \
             make install VERBOSE=1 ; \
         fi && \
     git clone https://github.com/Kurento/openwebrtc-gst-plugins.git /src/openwebrtc-gst-plugins.git && \
         cd /src/openwebrtc-gst-plugins.git/ && \
         autoreconf -vi && \
         ./configure --prefix=/usr --sysconfdir=/etc --libdir=/usr/lib64 --disable-static --disable-static-plugins --enable-shared && \
         make VERBOSE=1 && \
         make install VERBOSE=1 && \
     git clone -b ${KURENTO_CMAKE_VERSION} https://github.com/Kurento/kms-cmake-utils.git /src/kms-cmake-utils.git && \
         cd /src/kms-cmake-utils.git/ && \
         mkdir build && \
         cd build && \
         cmake \
             ${CMAKEOPTS} \
             .. && \
         make -j $(nproc) VERBOSE=1 && \
         make install -s && \
     git clone -b ${KURENTO_MODULE_CREATOR_VERSION} https://github.com/Kurento/kurento-module-creator.git /src/kurento-module-creator.git && \
         cd /src/kurento-module-creator.git/ && \
         mvn clean install -DskipTests && \
         cp target/kurento-module-creator-jar-with-dependencies.jar /usr/bin/. && \
         cp scripts/kurento-module-creator /usr/bin/. && \
         cp target/classes/*.cmake /usr/share/cmake/Modules/. && \
     git clone -b ${KURENTO_JSONCPP_VERSION} https://github.com/Kurento/jsoncpp.git /src/jsoncpp.git && \
         cd /src/jsoncpp.git/ && \
         mkdir build && \
         cd build && \
         cmake \
             ${CMAKEOPTS} \
             -DJSONCPP_WITH_CMAKE_PACKAGE=ON \
             -DLIBRARY_INSTALL_DIR=/usr/lib64/ \
             -DPACKAGE_INSTALL_DIR=/usr/share/cmake/ \
             .. && \
         make -j $(nproc) VERBOSE=1 && \
         make install -s && \
         mv -v /usr/lib/pkgconfig/*.pc /usr/share/pkgconfig/. && \
         mv -v /usr/share/cmake/jsoncpp/*.cmake /usr/share/cmake/Modules/. && \
         rm -rvf /usr/share/cmake/jsoncpp/ && \
         mv -v /usr/include/json/features.h /usr/include/json/json-features.h && \
         sed -i -e 's/features\.h/json-features\.h/g' /usr/include/json/*.h && \
         cp -av /usr/include/json /usr/include/kmsjsoncpp && \
     git clone -b ${KURENTO_JSONRPC_VERSION} https://github.com/Kurento/kms-jsonrpc.git /src/kms-jsonrpc.git && \
         cd /src/kms-jsonrpc.git/ && \
         mkdir build && \
         cd build && \
         cmake \
             ${CMAKEOPTS} \
             .. && \
         make -j $(nproc) VERBOSE=1 && \
         make install -s && \
     git clone -b ${KURENTO_CORE_VERSION} https://github.com/Kurento/kms-core.git /src/kms-core.git && \
         cd /src/kms-core.git/ && \
         mkdir build && \
         cd build && \
         if [ "${GST_BASE_VERSION}" != "1.8.1-1kurento2" ]; then \
             sed -r -i \
                 -e 's/gstreamer-(.*)1.5/gstreamer-\11.0/g' \
                 $(find -type f -name CMakeLists.txt) && \
             cmake \
                 ${CMAKEOPTS} \
                 -DCMAKE_INSTALL_GST_PLUGINS_DIR=/usr/lib64/gstreamer-1.0/ \
                 .. ; \
         else \
             cmake \
                 ${CMAKEOPTS} \
                 -DCMAKE_INSTALL_GST_PLUGINS_DIR=/usr/lib64/gstreamer-1.5/ \
                 .. ; \
         fi && \
         make -j $(nproc) VERBOSE=1 && \
         make install -s && \
     git clone -b ${KURENTO_ELEMENTS_VERSION} https://github.com/Kurento/kms-elements.git /src/kms-elements.git && \
         cd /src/kms-elements.git/ && \
         if [ "${GST_BASE_VERSION}" != "1.8.1-1kurento2" ]; then \
             sed -r -i \
                 -e 's/gstreamer-(.*)1.5/gstreamer-\11.0/g' \
                 $(find -type f -name CMakeLists.txt) ; \
         fi && \
         mkdir build && \
         cd build && \
         cmake \
             ${CMAKEOPTS} \
             .. && \
         sed -i \
             -e 's/-lkmsgstcommons/-lkmsgstcommons -lkmscoreinterface/g' \
             -e 's/-lkmscoreinterface/-lkmscoreinterface -lkmsutils/g' \
             $(find . -type f -name link.txt) && \
         make -j $(nproc) VERBOSE=1 && \
         make -j $(nproc) check VERBOSE=1 && \
         make install -s && \
         cp -av src/server/implementation/HttpServer/libkmshttpep.so /usr/lib64/. && \
         cp -av /usr/lib64/libkmswebrtcendpointlib.so* /usr/lib64/kurento/modules/. && \
         cp -av /usr/lib64/libkmshttpep.so* /usr/lib64/kurento/modules/. && \
     git clone -b ${KURENTO_FILTERS_VERSION} https://github.com/Kurento/kms-filters.git /src/kms-filters.git && \
         cd /src/kms-filters.git/ && \
         if [ "${GST_BASE_VERSION}" != "1.8.1-1kurento2" ]; then \
             sed -r -i \
                 -e 's/gstreamer-(.*)1.5/gstreamer-\11.0/g' \
                 $(find -type f -name CMakeLists.txt) ; \
         fi && \
         mkdir build && \
         cd build && \
         cmake \
             ${CMAKEOPTS} \
             .. && \
         make -j $(nproc) VERBOSE=1 && \
         make install -s && \
     git clone -b ${KURENTO_MEDIA_SERVER_VERSION} https://github.com/Kurento/kurento-media-server.git /src/kurento-media-server.git && \
         cd /src/kurento-media-server.git/ && \
         if [ "${GST_BASE_VERSION}" != "1.8.1-1kurento2" ]; then \
             sed -r -i \
                 -e 's/gstreamer-(.*)1.5/gstreamer-\11.0/g' \
                 $(find -type f -name CMakeLists.txt) ; \
         fi && \
         # work around for kurento not building on pcc64le \
         sed -i \
             -e '603,618d' \
             server/death_handler.cpp && \
         mkdir build && \
         cd build && \
         cmake \
             ${CMAKEOPTS} \
             .. && \
         # a linking error / oversight may occur \
         sed -i \
             -e 's/-lkmsgstcommons/-lkmsgstcommons -lkmscoreinterface/g' \
             $(find . -type f -name link.txt) && \
         make -j $(nproc) VERBOSE=1 && \
         make install VERBOSE=1 -s && \
         cp -av $(find . -type f -name 'libtransport.so*') /usr/lib64/ && \
         cp -av $(find . -type f -name 'libwebsocketTransport.so*') /usr/lib64/ && \
     if [ "${CLEAN}" -eq 1 ]; then \
         strip -s \
             /usr/lib64/gstreamer-*/*.so \
             /usr/lib64/kurento/modules/*.so* \
             /usr/lib64/libkms*.so* && \
         dnf -y remove \
             -x boost-filesystem \
             -x boost-program-options \
             -x boost-log \
             -x boost-thread \
             -x file \
             -x gstreamer1-plugins-base \
             -x gstreamer1-plugins-bad-free \
             -x glibmm24 \
             -x java-1.8.0-openjdk \
             -x libsigc \
+            -x libsoup \
             -x libvpx \
             -x opencv \
             boost-devel \
             cmake \
             gcc-c++ \
             git \
             glibmm24-devel \
             gstreamer1-devel \
             gstreamer1-plugins-base-devel \
             gstreamer1-plugins-bad-free-devel \
             libevent-devel \
             libsigc++20-devel \
             libsoup-devel \
             libuuid-devel \
             libvpx-devel \
             make \
             maven \
             opencv-devel \
             openssl-devel \
             redhat-rpm-config \
             vim-enhanced \
             websocketpp-devel && \
         dnf -y clean all && \
         rm -rvf \
             /src/ \
             /root/.m2/ \
             /usr/include/* \
             /usr/lib64/*.la \
             /usr/lib64/gstreamer-*/*.la && \
         ldconfig ; \
     fi
 
 COPY rootfs/ /
 
 CMD ["/bin/kurento-media-server"]