Fix missing libxcb-cursor and -shape in shotcut-build

Fixes mltframework/shotcut#1727

Author: ddennedy

docker/README.md

@@ -2,7 +2,7 @@
 
 ## Build Qt 6 for Linux
 
-    Note: outdated and no longer used for now since upgrading Shotcut to Qt 6.9.1 on Ubuntu 22.04,
+    Note: outdated and no longer used for now since upgrading Shotcut to Qt 6.8.3 on Ubuntu 22.04,
     which is using Qt SDK's binaries.
 
     docker build --rm -t mltframework/qt:6.4.3-ubuntu20.04 docker/qt6-build
@@ -11,9 +11,9 @@
 
 ## Build Shotcut for Linux
 
-    docker build --rm -t mltframework/shotcut-build:qt6.9.1-ubuntu22.04 docker/shotcut-build
+    docker build --rm -t mltframework/shotcut-build:qt6.8.3-ubuntu22.04 docker/shotcut-build
     mkdir work; cd work
     wget --no-check-certificate https://raw.githubusercontent.com/mltframework/shotcut/master/scripts/build-shotcut.sh
-    docker run -it --rm -v "$PWD":/root/shotcut mltframework/shotcut-build:qt6.9.1-ubuntu22.04 ./build-shotcut.sh
+    docker run -it --rm -v "$PWD":/root/shotcut mltframework/shotcut-build:qt6.8.3-ubuntu22.04 ./build-shotcut.sh
 
 Artifacts will be in work.

docker/shotcut-build/Dockerfile

@@ -16,8 +16,8 @@ RUN apt-get update -qq && \
         libcurl4-openssl-dev autopoint p7zip bzip2 zip curl libva-dev \
         apt-transport-https ca-certificates gnupg software-properties-common \
         libdouble-conversion-dev va-driver-all libxcb-xinerama0 libxcb-icccm4 \
-        libxcb-image0 libxcb-keysyms1 libxcb-render-util0 liblist-moreutils-perl \
-        cmake clang-15 curl g++-12 libgomp1 meson s3cmd
+        libxcb-image0 libxcb-keysyms1 libxcb-render-util0 libxcb-cursor0 libxcb-shape0 \
+        liblist-moreutils-perl cmake clang-15 curl g++-12 libgomp1 meson s3cmd
 
 WORKDIR /root/Qt
 RUN curl -kLO --no-progress-meter https://s3.amazonaws.com/misc.meltymedia/shotcut-build/qt-6.8.3-ubuntu22.04-x86_64.txz && \