chore(docker): add database Dockerfile to be used with docker-compose

docker/database/Dockerfile

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+FROM postgres:12
+
+# Allow for connecting to database without password authentication
+ENV POSTGRES_HOST_AUTH_METHOD=trust
+
+USER postgres
+
+# postgresql.conf and postgres_hba.conf resulted in error (Invalid data directory or sth); using -o/--options in initdb.sh instead
+# COPY --chown=postgres:postgres --chmod=644 ./postgresql.conf /etc/postgresql/12/main/postgresql.conf
+# COPY --chown=postgres:postgres --chmod=644 ./pg_hba.conf /etc/postgresql/12/main/pg_hba.conf
+COPY ./schema.sql /schema.sql
+COPY --chmod=755 ./initdb.sh /etc/fradrive-db
+
+ENTRYPOINT /etc/fradrive-db

docker/database/initdb.sh

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+#!/bin/bash
+
+# Init and start the postgres daemon
+initdb --no-locale
+pg_ctl start -w -o "-c listen_addresses=0.0.0.0 -c unix_socket_permissions=0700 -c max_connections=9990 -c shared_preload_libraries=pg_stat_statements -c session_preload_libraries=auto_explain -c auto_explain.log_min_duration=100ms" # COPY postgresql.conf and postgres_hba.conf resulted in error (Invalid data directory)
+POSTGRID=`cat /var/lib/postgresql/data/postmaster.pid | perl -le '<>=~m#(\d+)# and print $1'`
+
+# Create uniworx and uniworx_test database
+psql -f /schema.sql postgres
+
+# Wait for postgres daemon to terminate
+while [ -e /proc/$POSTGRID ]; do
+    sleep 0.5;
+done

docker/database/pg_hba.conf

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+local all all trust

docker/database/postgresql.conf

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+listen_addresses=0.0.0.0
+unix_socket_permissions=0700
+max_connections=9990
+shared_preload_libraries=pg_stat_statements
+session_preload_libraries=auto_explain
+auto_explain.log_min_duration=100ms

docker/database/schema.sql

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+CREATE USER uniworx WITH SUPERUSER;
+CREATE DATABASE uniworx_test;
+GRANT ALL ON DATABASE uniworx_test TO uniworx;
+CREATE DATABASE uniworx;
+GRANT ALL ON DATABASE uniworx TO uniworx;