Add missing deps for linux image (#8958)

* add missing deps for linux image

* use docker versioning

* add comment to linux docker container

build/azure-pipelines/linux/Dockerfile

@@ -6,7 +6,7 @@ RUN apt-get update --fix-missing
 
 RUN apt-get install -y libxkbfile-dev pkg-config libsecret-1-dev libxss1 dbus xvfb libgtk-3-0 \
 	libkrb5-dev git apt-transport-https ca-certificates curl gnupg-agent software-properties-common \
-	libnss3 libasound2 make gcc libx11-dev fakeroot rpm
+	libnss3 libasound2 make gcc libx11-dev fakeroot rpm libgconf-2-4 libunwind8 g++-4.8
 
 #docker
 RUN curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
@@ -15,6 +15,8 @@ RUN add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubunt
 RUN apt-get update
 RUN apt-get -y install docker-ce docker-ce-cli containerd.io
 
+# This image needs to be built on a linux host; some weird stuff happens and the xvfb service won't start
+# if built on a windows host.
 ADD ./xvfb.init /etc/init.d/xvfb
 RUN chmod +x /etc/init.d/xvfb
 RUN update-rc.d xvfb defaults

build/azure-pipelines/sql-product-build.yml

@@ -1,7 +1,7 @@
 resources:
   containers:
   - container: linux-x64
-    image: sqltoolscontainers.azurecr.io/linux-build-agent:x64
+    image: sqltoolscontainers.azurecr.io/linux-build-agent:1
     endpoint: ContainerRegistry
 
 jobs: