diff --git a/tool/quick_start/docker/README.md b/tool/quick_start/docker/README.md
index 25f912080..bb1340a09 100644
--- a/tool/quick_start/docker/README.md
+++ b/tool/quick_start/docker/README.md
@@ -12,10 +12,10 @@ Just build the Docker images like this. The quick start scripts will generate th
 
 ```
 docker build -t "ryzombuild_bionic_x86_64" -f "Y:\ryzomcore4\code\tool\quick_start\docker\ryzombuild_bionic_x86_64\Dockerfile" Y:\ryzomcore4\code
-```
-
-```
 docker build -t "ryzombuild_focal_x86_64" -f "Y:\ryzomcore4\code\tool\quick_start\docker\ryzombuild_focal_x86_64\Dockerfile" Y:\ryzomcore4\code
+docker build -t "ryzombuild_scout_x86_64" -f "Y:\ryzomcore4\code\tool\quick_start\docker\ryzombuild_scout_x86_64\Dockerfile" Y:\ryzomcore4\code
+docker build -t "ryzombuild_scout_gcc5_x86_64" -f "Y:\ryzomcore4\code\tool\quick_start\docker\ryzombuild_scout_gcc5_x86_64\Dockerfile" Y:\ryzomcore4\code
+docker build -t "ryzombuild_scout_gcc9_x86_64" -f "Y:\ryzomcore4\code\tool\quick_start\docker\ryzombuild_scout_gcc9_x86_64\Dockerfile" Y:\ryzomcore4\code
 ```
 
 ## Prepare Steam Runtime
@@ -46,9 +46,47 @@ docker run --rm ryzombuild_focal_x86_64 cmake --version
 docker run --rm steamrt_scout_amd64 cmake --version
 ```
 
+## Check GCC Version
+
+```
+docker run --rm ryzombuild_bionic_x86_64 gcc -v
+docker run --rm ryzombuild_focal_x86_64 gcc -v
+docker run --rm ryzombuild_scout_x86_64 gcc -v
+docker run --rm ryzombuild_scout_gcc5_x86_64 gcc -v
+docker run --rm ryzombuild_scout_gcc9_x86_64 gcc -v
+docker run --rm ryzombuild_scout_gcc9_x86_64 cc -v
+docker run --rm ryzombuild_scout_gcc9_x86_64 c++ -v
+```
+
 ## Build Client
 
 ```
-docker run --rm -v ryzombuild_focal_x86_64_hunter:/root/.hunter/_Base/Cache --mount "type=bind,source=Y:\ryzomcore4,target=/mnt/nel" --workdir "/mnt/nel/build_client_focal" ryzombuild_focal_x86_64 cmake -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DHUNTER_ENABLED=ON -DHUNTER_STATUS_DEBUG=ON -DHUNTER_JOBS_NUMBER=9 -DWITH_NEL_TESTS=OFF -DWITH_NEL_SAMPLES=OFF -DWITH_RYZOM=ON -DWITH_RYZOM_SERVER=OFF -DWITH_RYZOM_CLIENT=ON -DWITH_RYZOM_TOOLS=OFF -DWITH_NEL_TOOLS=OFF -DWITH_NELNS=OFF -DWITH_QT5=OFF -DWITH_LIBGSF=OFF -DFINAL_VERSION=ON -DWITH_DRIVER_OPENGL=ON -DWITH_DRIVER_OPENAL=ON ../code
-docker run --rm -v ryzombuild_focal_x86_64_hunter:/root/.hunter/_Base/Cache --mount "type=bind,source=Y:\ryzomcore4,target=/mnt/nel" --workdir "/mnt/nel/build_client_focal" ryzombuild_focal_x86_64 ninja -j9
+docker run --rm -v ryzombuild_focal_x86_64_hunter:/root/.hunter --mount "type=bind,source=Y:\ryzomcore4,target=/mnt/nel" --workdir "/mnt/nel/build_client_focal" ryzombuild_focal_x86_64 cmake -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DHUNTER_ENABLED=ON -DHUNTER_STATUS_DEBUG=ON -DHUNTER_JOBS_NUMBER=9 -DWITH_NEL_TESTS=OFF -DWITH_NEL_SAMPLES=OFF -DWITH_RYZOM=ON -DWITH_RYZOM_SERVER=OFF -DWITH_RYZOM_CLIENT=ON -DWITH_RYZOM_PATCH=ON -DWITH_RYZOM_TOOLS=OFF -DWITH_NEL_TOOLS=OFF -DWITH_NELNS=OFF -DWITH_QT5=OFF -DWITH_LIBGSF=OFF -DFINAL_VERSION=ON -DWITH_DRIVER_OPENGL=ON -DWITH_DRIVER_OPENAL=ON ../code
+docker run --rm -v ryzombuild_focal_x86_64_hunter:/root/.hunter --mount "type=bind,source=Y:\ryzomcore4,target=/mnt/nel" --workdir "/mnt/nel/build_client_focal" ryzombuild_focal_x86_64 ninja -j9
+```
+
+```
+docker run --rm -v ryzombuild_bionic_x86_64_hunter:/root/.hunter --mount "type=bind,source=Y:\ryzomcore4,target=/mnt/nel" --workdir "/mnt/nel/build_client_bionic" ryzombuild_bionic_x86_64 cmake -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DHUNTER_ENABLED=ON -DHUNTER_STATUS_DEBUG=ON -DHUNTER_JOBS_NUMBER=9 -DWITH_NEL_TESTS=OFF -DWITH_NEL_SAMPLES=OFF -DWITH_RYZOM=ON -DWITH_RYZOM_SERVER=OFF -DWITH_RYZOM_CLIENT=ON -DWITH_RYZOM_PATCH=ON -DWITH_RYZOM_TOOLS=OFF -DWITH_NEL_TOOLS=OFF -DWITH_NELNS=OFF -DWITH_QT5=OFF -DWITH_LIBGSF=OFF -DFINAL_VERSION=ON -DWITH_DRIVER_OPENGL=ON -DWITH_DRIVER_OPENAL=ON ../code
+docker run --rm -v ryzombuild_bionic_x86_64_hunter:/root/.hunter --mount "type=bind,source=Y:\ryzomcore4,target=/mnt/nel" --workdir "/mnt/nel/build_client_bionic" ryzombuild_bionic_x86_64 ninja -j9
+```
+
+## Test Steam Runtime directly with GCC 4.8.4
+
+```
+docker run --rm -v steamrt_scout_amd64_hunter:/root/.hunter --mount "type=bind,source=Y:\ryzomcore4,target=/mnt/nel" --workdir "/mnt/nel/build_client_scout" steamrt_scout_amd64 cmake -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DHUNTER_ENABLED=ON -DHUNTER_STATUS_DEBUG=ON -DHUNTER_JOBS_NUMBER=9 -DWITH_NEL_TESTS=OFF -DWITH_NEL_SAMPLES=OFF -DWITH_RYZOM=ON -DWITH_RYZOM_SERVER=OFF -DWITH_RYZOM_CLIENT=ON -DWITH_RYZOM_PATCH=ON -DWITH_RYZOM_TOOLS=OFF -DWITH_NEL_TOOLS=OFF -DWITH_NELNS=OFF -DWITH_QT5=OFF -DWITH_LIBGSF=OFF -DFINAL_VERSION=ON -DWITH_DRIVER_OPENGL=ON -DWITH_DRIVER_OPENAL=ON -DWITH_SSE3=OFF ../code
+docker run --rm -v steamrt_scout_amd64_hunter:/root/.hunter --mount "type=bind,source=Y:\ryzomcore4,target=/mnt/nel" --workdir "/mnt/nel/build_client_scout" steamrt_scout_amd64 ninja -j9
+```
+
+## Test Steam Runtime with GCC 5
+
+```
+docker run --rm -v ryzombuild_scout_gcc5_x86_64_hunter:/root/.hunter --mount "type=bind,source=Y:\ryzomcore4,target=/mnt/nel" --workdir "/mnt/nel/build_client_scout_gcc5" ryzombuild_scout_gcc5_x86_64 cmake -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DHUNTER_ENABLED=ON -DHUNTER_STATUS_DEBUG=ON -DHUNTER_JOBS_NUMBER=9 -DWITH_NEL_TESTS=OFF -DWITH_NEL_SAMPLES=OFF -DWITH_RYZOM=ON -DWITH_RYZOM_SERVER=OFF -DWITH_RYZOM_CLIENT=ON -DWITH_RYZOM_PATCH=ON -DWITH_RYZOM_TOOLS=OFF -DWITH_NEL_TOOLS=OFF -DWITH_NELNS=OFF -DWITH_QT5=OFF -DWITH_LIBGSF=OFF -DFINAL_VERSION=ON -DWITH_DRIVER_OPENGL=ON -DWITH_DRIVER_OPENAL=ON -DWITH_SSE3=OFF ../code
+docker run --rm -v ryzombuild_scout_gcc5_x86_64_hunter:/root/.hunter --mount "type=bind,source=Y:\ryzomcore4,target=/mnt/nel" --workdir "/mnt/nel/build_client_scout_gcc5" ryzombuild_scout_gcc5_x86_64 ninja -j9
+```
+
+## Test Steam Runtime with GCC 9
+
+```
+docker run --rm -v ryzombuild_scout_gcc9_x86_64_hunter:/root/.hunter --mount "type=bind,source=Y:\ryzomcore4,target=/mnt/nel" --workdir "/mnt/nel/build_client_scout_gcc9" ryzombuild_scout_gcc9_x86_64 cmake -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DHUNTER_ENABLED=ON -DHUNTER_STATUS_DEBUG=ON -DHUNTER_JOBS_NUMBER=9 -DWITH_NEL_TESTS=OFF -DWITH_NEL_SAMPLES=OFF -DWITH_RYZOM=ON -DWITH_RYZOM_SERVER=OFF -DWITH_RYZOM_CLIENT=ON -DWITH_RYZOM_PATCH=ON -DWITH_RYZOM_TOOLS=OFF -DWITH_NEL_TOOLS=OFF -DWITH_NELNS=OFF -DWITH_QT5=OFF -DWITH_LIBGSF=OFF -DFINAL_VERSION=ON -DWITH_DRIVER_OPENGL=ON -DWITH_DRIVER_OPENAL=ON -DWITH_SSE3=OFF ../code
+docker run --rm -v ryzombuild_scout_gcc9_x86_64_hunter:/root/.hunter --mount "type=bind,source=Y:\ryzomcore4,target=/mnt/nel" --workdir "/mnt/nel/build_client_scout_gcc9" ryzombuild_scout_gcc9_x86_64 ninja -j9
 ```
diff --git a/tool/quick_start/docker/ryzombuild_scout_gcc5_x86_64/Dockerfile b/tool/quick_start/docker/ryzombuild_scout_gcc5_x86_64/Dockerfile
new file mode 100644
index 000000000..60e6dea74
--- /dev/null
+++ b/tool/quick_start/docker/ryzombuild_scout_gcc5_x86_64/Dockerfile
@@ -0,0 +1,14 @@
+FROM --platform=linux/amd64 steamrt_scout_amd64:latest
+MAINTAINER Ryzom Core <https://wiki.ryzom.dev/>
+
+RUN update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-5 50 \
+  && update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-5 50 \
+  && update-alternatives --set gcc "/usr/bin/gcc-5" \
+  && update-alternatives --set g++ "/usr/bin/g++-5"
+
+RUN update-alternatives --install /usr/bin/ld ld /usr/bin/ld.gold 50 \
+  && update-alternatives --set ld "/usr/bin/ld.gold"
+
+RUN mkdir -p /mnt/nel
+
+WORKDIR /mnt/nel
diff --git a/tool/quick_start/docker/ryzombuild_scout_gcc9_x86_64/Dockerfile b/tool/quick_start/docker/ryzombuild_scout_gcc9_x86_64/Dockerfile
new file mode 100644
index 000000000..636c030ad
--- /dev/null
+++ b/tool/quick_start/docker/ryzombuild_scout_gcc9_x86_64/Dockerfile
@@ -0,0 +1,34 @@
+FROM --platform=linux/amd64 steamrt_scout_amd64:latest
+MAINTAINER Ryzom Core <https://wiki.ryzom.dev/>
+
+RUN update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-9 90 \
+  && update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-9 90 \
+  && update-alternatives --set gcc "/usr/bin/gcc-9" \
+  && update-alternatives --set g++ "/usr/bin/g++-9"
+
+RUN rm /usr/bin/cc \
+  && ln -s /usr/lib/gcc-9/bin/gcc-9 /usr/bin/cc
+
+RUN update-alternatives --install /usr/bin/ld ld /usr/bin/ld.gold-2.30 90 \
+  && update-alternatives --set ld "/usr/bin/ld.gold-2.30"
+
+RUN rm /usr/bin/addr2line && ln -s /usr/bin/addr2line-2.30 /usr/bin/addr2line \
+  && rm /usr/bin/ar && ln -s /usr/bin/ar-2.30 /usr/bin/ar \
+  && rm /usr/bin/as && ln -s /usr/bin/as-2.30 /usr/bin/as \
+  && rm /usr/bin/c++filt && ln -s /usr/bin/c++filt-2.30 /usr/bin/c++filt \
+  && ln -s /usr/bin/dwp-2.30 /usr/bin/dwp \
+  && rm /usr/bin/elfedit && ln -s /usr/bin/elfedit-2.30 /usr/bin/elfedit \
+  && rm /usr/bin/gold && ln -s /usr/bin/gold-2.30 /usr/bin/gold \
+  && rm /usr/bin/gprof && ln -s /usr/bin/gprof-2.30 /usr/bin/gprof \
+  && rm /usr/bin/nm && ln -s /usr/bin/nm-2.30 /usr/bin/nm \
+  && rm /usr/bin/objcopy && ln -s /usr/bin/objcopy-2.30 /usr/bin/objcopy \
+  && rm /usr/bin/objdump && ln -s /usr/bin/objdump-2.30 /usr/bin/objdump \
+  && rm /usr/bin/ranlib && ln -s /usr/bin/ranlib-2.30 /usr/bin/ranlib \
+  && rm /usr/bin/readelf && ln -s /usr/bin/readelf-2.30 /usr/bin/readelf \
+  && rm /usr/bin/size && ln -s /usr/bin/size-2.30 /usr/bin/size \
+  && rm /usr/bin/strings && ln -s /usr/bin/strings-2.30 /usr/bin/strings \
+  && rm /usr/bin/strip && ln -s /usr/bin/strip-2.30 /usr/bin/strip
+
+RUN mkdir -p /mnt/nel
+
+WORKDIR /mnt/nel
diff --git a/tool/quick_start/docker/ryzombuild_scout_x86_64/Dockerfile b/tool/quick_start/docker/ryzombuild_scout_x86_64/Dockerfile
new file mode 100644
index 000000000..817ce92c8
--- /dev/null
+++ b/tool/quick_start/docker/ryzombuild_scout_x86_64/Dockerfile
@@ -0,0 +1,6 @@
+FROM --platform=linux/amd64 steamrt_scout_amd64:latest
+MAINTAINER Ryzom Core <https://wiki.ryzom.dev/>
+
+RUN mkdir -p /mnt/nel
+
+WORKDIR /mnt/nel