Add usrmerge to NodeChromium after setting sources. Split Firefox ins…

…tall into 2 runs for easier debugging

NodeChromium/Dockerfile

@@ -22,7 +22,7 @@ RUN echo "deb http://deb.debian.org/debian/ sid main" >> /etc/apt/sources.list \
   # && apt-get -qqy install chromium=93.0.4577.82-1 \
   # && apt-get -qqy install chromium=97.0.4692.71-0.1 \
   # && apt-get -qqy install chromium=98.0.4758.102-1+b1 \
-  && apt-get -qqy install chromium \
+  && apt-get -qqy install usrmerge chromium \
   && rm -rf /var/lib/apt/lists/* /var/cache/apt/*
 
 #=================================

NodeFirefox/Dockerfile.multi-arch

@@ -27,8 +27,9 @@ USER root
 RUN echo "deb http://deb.debian.org/debian/ sid main" >> /etc/apt/sources.list \
   && apt-get update -qqy \
   && apt-get install libavcodec-extra -y \
-  && wget https://snapshot.debian.org/archive/debian/20231208T150859Z/pool/main/f/firefox/firefox_120.0.1-1_`dpkg --print-architecture`.deb -O firefox.deb \
-  && apt install ./firefox.deb -y \
+  && wget https://snapshot.debian.org/archive/debian/20231208T150859Z/pool/main/f/firefox/firefox_120.0.1-1_`dpkg --print-architecture`.deb -O firefox.deb
+
+RUN apt install ./firefox.deb -y \
   && rm -rf /var/lib/apt/lists/* /var/cache/apt/* ./firefox.deb
 
 #=============