anchor.diff:      seewave \
       nimble \
       jsonld \
  -    jsonvalidate && \
  -  R -e "remotes::install_github(c('rstudio/blogdown', 'hadley/pkgdown'), upgrade = FALSE)" && \
  +    jsonvalidate \
  +    extrafontdb \
  +    blogdown \
  +    pkgdown && \
  +  R -e "remotes::install_github(c('hrbrmstr/hrbrthemes'), upgrade = FALSE)" && \
     echo '\n options(blogdown.hugo.dir = "/usr/local/lib/")' >> /usr/local/lib/R/etc/Rprofile.site && \
     R -e "blogdown::install_hugo()" && \
     git config --system user.name 'Carl Boettiger' && \
  
positive.code: FROM rocker/geospatial:latest
  MAINTAINER Carl Boettiger cboettig@ropensci.org 
  
  ENV PATH=/usr/lib/ccache:$PATH
  
negative.code: RUN apt-get update && \
    apt-get -y install --no-install-recommends \
    ccache \
    fonts-roboto \
    libgpgme11-dev \
    liblapack-dev \
    librdf0-dev \
  