anchor.diff:    PORT=3000 \
     DEV_CACHE_DIR=/dev-cache
   
  -# Determine Debian version
  +# Build dependencies
   RUN apt-get update && \
     apt-get -y install build-essential curl gpg lsb-release && \
     rm -rf /var/lib/apt/lists/*
  
positive.code: ARG POSTGRESQL_VERSION=14
  RUN set -x && \
    apt-get update && \
    apt-get -y install libvips && \
    apt-get -y install jpegoptim optipng gifsicle pngquant && \
    apt-get -y install "postgresql-client-${POSTGRESQL_VERSION}" && \
    pg_dump --version | grep --fixed-strings "(PostgreSQL) ${POSTGRESQL_VERSION}." && \
  
negative.code: 
  # For image resizing/manipulation.
  RUN apt-get update && \
    apt-get -y install file libvips && \
    rm -rf /var/lib/apt/lists/*
  
  # For image optimization.
  