Docker: Update build image with final OCIOv2, Qt 5.15.2, OTIO, Crashpad (#1489)

* Add missing xcb-util-* packages. Qt's libqxcb.so seems to require them in the newer Qt version

* Adjust breakpad install prefix to match CMake change

* Add build script for Olive for quick testing

* .n in CI image actually stands for image revision

* skipping the CI is now supported natively by GitHub Actions

docker/ci-ffmpeg/Dockerfile

@@ -9,6 +9,7 @@ ARG CI_COMMON_VERSION=2
 ARG FFMPEG_VERSION=4.2.4
 ARG NASM_VERSION=2.15.03
 ARG YASM_VERSION=1.3.0
+ARG AOM_VERSION=v2.0.1
 ARG X265_VERSION=3.4
 ARG OGG_VERSION=1.3.4
 ARG OPUS_VERSION=1.3.1
@@ -20,7 +21,7 @@ ARG LAME_VERSION=3.100
 ARG XVID_VERSION=1.3.5
 ARG OPENJPEG_VERSION=2.3.1
 ARG LIBPNG_VERSION=1.6.31
-# TODO: Make version of x264, x265 and libvpx selectable?
+# TODO: Make version of x264 selectable?
 ARG NUM_JOBS=2
 
 FROM ${OLIVE_ORG}/ci-common:${CI_COMMON_VERSION} as ci-ffmpeg
@@ -30,6 +31,7 @@ ARG CI_COMMON_VERSION
 ARG FFMPEG_VERSION
 ARG NASM_VERSION
 ARG YASM_VERSION
+ARG AOM_VERSION
 ARG X265_VERSION
 ARG OGG_VERSION
 ARG OPUS_VERSION
@@ -41,8 +43,7 @@ ARG LAME_VERSION
 ARG XVID_VERSION
 ARG OPENJPEG_VERSION
 ARG LIBPNG_VERSION
-# TODO: Make version of x264, x265 and libvpx selectable?
-ARG NUM_JOBS=2
+ARG NUM_JOBS
 
 LABEL maintainer="olivevideoeditor@gmail.com"
 LABEL org.opencontainers.image.name="$OLIVE_ORG/ci-ffmpeg"
@@ -61,6 +62,7 @@ ENV OLIVE_ORG=${OLIVE_ORG} \
     FFMPEG_VERSION=${FFMPEG_VERSION} \
     NASM_VERSION=${NASM_VERSION} \
     YASM_VERSION=${YASM_VERSION} \
+    AOM_VERSION=${AOM_VERSION} \
     X265_VERSION=${X265_VERSION} \
     OGG_VERSION=${OGG_VERSION} \
     OPUS_VERSION=${OPUS_VERSION} \