anchor.diff:  	esac; \
   	\
   # https://github.com/golang/go/issues/38536#issuecomment-616897960
  -	url='https://storage.googleapis.com/golang/go1.15.1.src.tar.gz'; \
  -	sha256='d3743752a421881b5cc007c76b4b68becc3ad053e61275567edab1c99e154d30'; \
  +	url='https://storage.googleapis.com/golang/go1.15.8.src.tar.gz'; \
  +	sha256='540c0ab7781084d124991321ed1458e479982de94454a98afab6acadf38497c2'; \
   	\
   	wget -O go.tgz.asc "$url.asc"; \
   	wget -O go.tgz "$url"; \
  
positive.code: FROM node:10-alpine3.11
  
  RUN apk add --no-cache \
  		ca-certificates
  
negative.code: # https://www.google.com/linuxrepositories/
  	gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys 'EB4C 1BFD 4F04 2F6D DDCC EC91 7721 F63B D38B 4796'; \
  	gpg --batch --verify go.tgz.asc go.tgz; \
  	gpgconf --kill all; \
  	rm -rf "$GNUPGHOME" go.tgz.asc; \
  	\
  	tar -C /usr/local -xzf go.tgz; \
  