anchor.diff:    apk --update add git ca-certificates openssl g++ make python linux-headers \
       && printf '-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApZ2u1KJKUu/fW4A25y9m\ny70AGEa/J3Wi5ibNVGNn1gT1r0VfgeWd0pUybS4UmcHdiNzxJPgoWQhV2SSW1JYu\ntOqKZF5QSN6X937PTUpNBjUvLtTQ1ve1fp39uf/lEXPpFpOPL88LKnDBgbh7wkCp\nm2KzLVGChf83MS0ShL6G9EQIAUxLm99VpgRjwqTQ/KfzGtpke1wqws4au0Ab4qPY\nKXvMLSPLUp7cfulWvhmZSegr5AdhNw5KNizPqCJT8ZrGvgHypXyiFvvAH5YRtSsc\nZvo9GI2e2MaZyo9/lvb+LbLEJZKEQckqRj4P26gmASrZEPStwc+yqy1ShHLA0j6m\n1QIDAQAB\n-----END PUBLIC KEY-----\n' > /etc/apk/keys/sgerrand.rsa.pub \
     && wget https://github.com/sgerrand/alpine-pkg-glibc/releases/download/${GLIBC_VER}/glibc-${GLIBC_VER}.apk \
  -  && wget https://github.com/sgerrand/alpine-pkg-glibc/releases/download/${GLIBC_VER}/glibc-dev-${GLIBC_VER}.apk \
  -  && apk add glibc-${GLIBC_VER}.apk glibc-dev-${GLIBC_VER}.apk \
  -  && rm glibc-${GLIBC_VER}.apk glibc-dev-${GLIBC_VER}.apk \
  +  && apk add glibc-${GLIBC_VER}.apk \
  +  && rm glibc-${GLIBC_VER}.apk \
     && yarn --production \
     && apk del \
       g++ \
  
positive.code:     wget \
      python \
      linux-headers \
      glibc-dev \
    && rm -rf \
      /tmp/* \
      /root/.node-gyp \
  
negative.code: 
  ENV NCONF_NAMESPACE=MS_FILES \
      NODE_ENV=$NODE_ENV \
      GLIBC_VER=2.25-r0 \
      LD_LIBRARY_PATH=/usr/glibc-compat/lib/
  
  WORKDIR /src
  