Build libplacebo from source

Dockerfile

@@ -24,7 +24,6 @@ RUN apt-get -y install \
         cargo \
         git \
         libfftw3-dev \
-        libplacebo-dev \
         libtool \
         meson \
         vapoursynth-dev
@@ -61,6 +60,20 @@ RUN cd /tmp \
     && cd .. \
     && rm -rf vapoursynth-descale
 
+# TODO: Remove once debian has compatible libplacebo version
+RUN echo "deb-src" http://deb.debian.org/debian testing main >> /etc/apt/sources.list.d/src.list \
+    && apt-get update \
+    && apt-get -y build-dep libplacebo \
+    && cd /tmp/ \
+    && git clone --depth=1 https://code.videolan.org/videolan/libplacebo.git \
+    && cd libplacebo \
+    && meson build \
+    && ninja -C build \
+    && ninja -C build install \
+    && cd .. \
+    && rm -rf libplacebo \
+    && rm /etc/apt/sources.list.d/src.list
+
 RUN cd /tmp \
     && git clone --depth=1 --recursive https://github.com/Lypheo/vs-placebo \
     && cd vs-placebo \