Ensure all necessary build tools exist in image

Author: tdonohue

Dockerfile

@@ -6,6 +6,10 @@ WORKDIR /app
 ADD . /app/
 EXPOSE 4000
 
+# Ensure Python and other build tools are available
+# These are needed to install some node modules, especially on linux/arm64
+RUN apk add --update python3 make g++ && rm -rf /var/cache/apk/*
+
 # We run yarn install with an increased network timeout (5min) to avoid "ESOCKETTIMEDOUT" errors from hub.docker.com
 # See, for example https://github.com/yarnpkg/yarn/issues/5540
 RUN yarn install --network-timeout 300000