jibri: simplify Dockerfile

Slightly reduce layer count by running everything in a single RUN.

Also reduce build time by skipping some unneeded apt update / cleanups.

jibri/Dockerfile

@@ -8,20 +8,18 @@ LABEL org.opencontainers.image.url="https://github.com/jitsi/jibri"
 LABEL org.opencontainers.image.source="https://github.com/jitsi/docker-jitsi-meet"
 LABEL org.opencontainers.image.documentation="https://jitsi.github.io/handbook/"
 
-RUN apt-dpkg-wrap apt-get update && \
-    apt-dpkg-wrap apt-get install -y jibri libgl1-mesa-dri procps jitsi-upload-integrations jq && \
-    apt-cleanup
-
 ARG TARGETPLATFORM
 ARG USE_CHROMIUM=0
 #ARG CHROME_RELEASE=latest
 #ARG CHROMEDRIVER_MAJOR_RELEASE=latest
 ARG CHROME_RELEASE=102.0.5005.61
 ARG CHROMEDRIVER_MAJOR_RELEASE=102
-COPY build/install-chrome.sh /install-chrome.sh
-RUN /install-chrome.sh && \
-    rm /install-chrome.sh
 
 COPY rootfs/ /
 
+RUN apt-dpkg-wrap apt-get update && \
+    apt-dpkg-wrap apt-get install -y jibri libgl1-mesa-dri procps jitsi-upload-integrations jq && \
+    /usr/bin/install-chrome.sh && \
+    apt-cleanup
+
 VOLUME /config

jibri/build/install-chrome.sh → jibri/rootfs/usr/bin/install-chrome.sh

@@ -4,9 +4,7 @@ set -o pipefail -xeu
 
 if [ "${USE_CHROMIUM}" = 1 -o "${TARGETPLATFORM}" = "linux/arm64" ]; then
     echo "Using Debian's Chromium"
-    apt-dpkg-wrap apt-get update
     apt-dpkg-wrap apt-get install -y chromium chromium-driver chromium-sandbox
-    apt-cleanup
     chromium --version
 else
     if  [ "${CHROME_RELEASE}" = "latest" ]; then
@@ -14,12 +12,9 @@ else
         echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" > /etc/apt/sources.list.d/google-chrome.list
         apt-dpkg-wrap apt-get update
         apt-dpkg-wrap apt-get install -y google-chrome-stable
-        apt-cleanup
     else
         curl -4so "/tmp/google-chrome-stable_${CHROME_RELEASE}-1_amd64.deb" "http://dl.google.com/linux/chrome/deb/pool/main/g/google-chrome-stable/google-chrome-stable_${CHROME_RELEASE}-1_amd64.deb"
-        apt-dpkg-wrap apt-get update
         apt-dpkg-wrap apt-get install -y "/tmp/google-chrome-stable_${CHROME_RELEASE}-1_amd64.deb"
-        apt-cleanup
     fi
 
     google-chrome --version