gospotcheck Dockerfile: https://hub.docker.com/r/rohara/postgis

Dockerfile

FROM mdillon/postgis:9.4

ENV POSTGRES_USER=root \
    POSTGRES_DB=circle_test

# This is performance optimization tweak to make DB faster
RUN if [ -e /usr/local/share/postgresql/postgresql.conf.sample ]; then \
        postgresfile=/usr/local/share/postgresql/postgresql.conf.sample; \
    else \
        postgresfile=/usr/share/postgresql/postgresql.conf.sample; \
    fi && \
    echo fsync=off >> $postgresfile &&\
    echo synchronous_commit=off >> $postgresfile &&\
    echo full_page_writes=off >> $postgresfile &&\
    echo bgwriter_lru_maxpages=0 >> $postgresfile

ENV PGDATA /dev/shm/pgdata/data