support arm64 / amd64 arch (garris#1300)

docker/Dockerfile

@@ -1,40 +1,25 @@
-FROM node:16.14.0
+# use bullseye node base, as debian does provide a chromium for arm64 and amd64 flavour
+FROM node:16-bullseye
 
 ARG BACKSTOPJS_VERSION
+ARG DEBIAN_FRONTEND=noninteractive
 
-ENV \
-	BACKSTOPJS_VERSION=$BACKSTOPJS_VERSION
+ENV BACKSTOPJS_VERSION=$BACKSTOPJS_VERSION
 
-# Base packages
-RUN apt-get update && \
-	apt-get install -y git sudo software-properties-common
+# install chromium and its deps
+RUN apt-get -qq update >/dev/null && apt-get install -qq fonts-liberation chromium >/dev/null
 
-RUN sudo npm install -g --unsafe-perm=true --allow-root backstopjs@${BACKSTOPJS_VERSION}
-
-RUN wget https://dl-ssl.google.com/linux/linux_signing_key.pub && sudo apt-key add linux_signing_key.pub
-RUN sudo add-apt-repository "deb http://dl.google.com/linux/chrome/deb/ stable main"
-
-# RUN	apt-get -y update && apt-get -y install google-chrome-stable
-
-# RUN apt-get install -y firefox-esr
-
-# gconf-service libxext6.... added for https://github.com/garris/BackstopJS/issues/1225
-
-RUN apt-get -qqy update \
-  && apt-get -qqy --no-install-recommends install \
-    libfontconfig \
-    libfreetype6 \
-    xfonts-cyrillic \
-    xfonts-scalable \
-    fonts-liberation \
-    fonts-ipafont-gothic \
-    fonts-wqy-zenhei \
-    libgbm-dev \
-    gconf-service libxext6 libxfixes3 libxi6 libxrandr2 libxrender1 libcairo2 libcups2 libdbus-1-3 libexpat1 libfontconfig1 libgcc1 libgconf-2-4 libgdk-pixbuf2.0-0 libglib2.0-0 libgtk-3-0 libnspr4 libpango-1.0-0 libpangocairo-1.0-0 libstdc++6 libx11-6 libx11-xcb1 libxcb1 libxcomposite1 libxcursor1 libxdamage1 libxss1 libxtst6 libappindicator1 libnss3 libasound2 libatk1.0-0 libc6 ca-certificates fonts-liberation lsb-release xdg-utils wget \
-  && rm -rf /var/lib/apt/lists/* \
-  && apt-get -qyy clean
+USER root
+# skip download, we already have it installed
+ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true
+RUN npm install -g --unsafe-perm=true --allow-root backstopjs@${BACKSTOPJS_VERSION}
+RUN rm -rf /var/lib/apt/lists/* \ && apt-get -qq clean >/dev/null
 
+USER node
 
+# set executable path
+ENV PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium
 WORKDIR /src
 
 ENTRYPOINT ["backstop"]
+

docker/README.md

@@ -74,3 +74,38 @@ docker run --rm -v $(pwd):/src -it --entrypoint=bash backstopjs/backstopjs
 
 ## Jenkins Guide
 You could get a Jenkins Guide here: [Jenkins Guide](../examples/Jenkins)
+
+## MultiArch Build
+
+Your docker setup should have buildx support to be able to build that.
+
+```
+docker buildx create --name mybuilder --use --bootstrap
+```
+
+Build + Push:
+
+```
+export BACKSTOPJS_VERSION=6.1.4
+docker buildx build --push --build-arg BACKSTOPJS_VERSION --platform linux/amd64,linux/arm64 --tag backstopjs/backstopjs:$BACKSTOPJS_VERSION
+
+```
+
+### local load to your registry
+
+build + load it to your registry (load does not support more than 1 platform, push does https://github.com/docker/buildx/issues/59):
+
+AMD64:
+
+```
+export BACKSTOPJS_VERSION=6.1.4
+docker buildx build --build-arg BACKSTOPJS_VERSION --platform linux/amd64 --load --tag backstopjs/backstopjs:$BACKSTOPJS_VERSION
+```
+
+ARM64:
+
+```
+export BACKSTOPJS_VERSION=6.1.4
+docker buildx build --build-arg BACKSTOPJS_VERSION --platform linux/arm64 --load --tag backstopjs/backstopjs:$BACKSTOPJS_VERSION
+```
+