Added VTM reference encoder for VVC

Dockerfile

@@ -13,6 +13,9 @@ ARG UVG266_REPO=https://github.com/ultravideo/uvg266.git
 ARG VVENC_TAG=v1.9.0
 ARG VVENC_REPO=https://github.com/fraunhoferhhi/vvenc.git
 
+ARG VTM_TAG=VTM-21.2
+ARG VTM_REPO=https://vcgit.hhi.fraunhofer.de/jvet/VVCSoftware_VTM.git
+
 # AV1 codecs/tools
 ARG AOM_TAG=v3.7.0-rc1
 ARG AOM_REPO=https://aomedia.googlesource.com/aom.git
@@ -164,6 +167,15 @@ COPY docker/build/vvenc/build.sh /build.sh
 
 RUN /build.sh
 
+FROM build-base AS build-vtm
+
+ARG VTM_TAG
+ARG VTM_REPO
+
+COPY docker/build/vtm/build.sh /build.sh
+
+RUN /build.sh
+
 FROM build-base AS build-aom
 
 ARG AOM_TAG
@@ -369,6 +381,7 @@ COPY --from=build-rav1e /usr/bin/rav1e /usr/bin/rav1e
 COPY --from=build-uvg266 /usr/bin/uvg266 /usr/bin/uvg266
 COPY --from=build-uvg266-10bit /usr/bin/uvg266 /usr/bin/uvg266-10bit
 COPY --from=build-vvenc /usr/bin/vvenc* /usr/bin/
+COPY --from=build-vtm /usr/bin/VTM* /usr/bin/
 
 COPY --from=build-xeve /usr/bin/xeveb_app /usr/bin/xeveb
 COPY --from=build-xeve-main /usr/bin/xeve_app /usr/bin/xeve

docker/build/vtm/build.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+set -e
+set -o pipefail
+
+git-shallow-clone "${VTM_TAG}" "${VTM_REPO}" /src/vtm
+pushd /src/vtm
+# Patch -Werror out and remove other build outputs
+sed -i 's/warnings-as-errors//g' CMakeLists.txt
+sed -i -r 's@add_subdirectory\( "source/App/.*$@@g' CMakeLists.txt
+echo 'add_subdirectory( "source/App/EncoderApp" )' >> CMakeLists.txt
+echo 'add_subdirectory( "source/App/DecoderApp" )' >> CMakeLists.txt
+mkdir b
+pushd b
+cmake .. \
+-DENABLE_HIGH_BITDEPTH=ON \
+-DBUILD_SHARED_LIBS=OFF \
+-DENABLE_STATIC=ON \
+-DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON \
+-DCMAKE_BUILD_TYPE=Release \
+-D CMAKE_INSTALL_PREFIX:PATH=/usr
+make -j$(nproc)
+cp -v /src/vtm/bin/EncoderAppStatic /usr/bin/VTMEncoder
+cp -v /src/vtm/bin/DecoderAppStatic /usr/bin/VTMDecoder