This worked in the past but it seams it stopped working. When running make bootstrap this error occures:

Hit:1 http://security.debian.org/debian-security stretch/updates InRelease
Ign:2 http://deb.debian.org/debian stretch InRelease
Hit:3 http://deb.debian.org/debian stretch-updates InRelease
Get:4 http://dl.google.com/linux/chrome/deb stable InRelease [1811 B]
Hit:5 http://deb.debian.org/debian stretch Release
Get:6 http://dl.google.com/linux/chrome/deb stable/main amd64 Packages [1082 B]
Fetched 2893 B in 0s (7072 B/s)
Reading package lists...
Reading package lists...
Building dependency tree...
Reading state information...
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
google-chrome-unstable : Depends: libdrm2 (>= 2.4.75) but 2.4.74-1 is to be installed
Depends: libgbm1 (>= 17.1.0~rc2) but 13.0.6-1+b2 is to be installed
Depends: libnss3 (>= 2:3.31) but it is not going to be installed
Depends: libu2f-udev but it is not installable
E: Unable to correct problems, you have held broken packages.
ERROR: Service 'app' failed to build: The command '/bin/sh -c apt-get update && apt-get install -y wget gnupg && wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add - && sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list' && apt-get update && apt-get install -y google-chrome-unstable fonts-ipafont-gothic fonts-wqy-zenhei fonts-thai-tlwg fonts-kacst fonts-freefont-ttf --no-install-recommends && rm -rf /var/lib/apt/lists/*' returned a non-zero code: 100
Makefile:77: recipe for target 'build-image' failed
make: *** [build-image] Error 1