Add .psqlrc configuration file and copy it to the Docker image

notebook/.psqlrc

@@ -0,0 +1,20 @@
+-- Official docs: http://www.postgresql.org/docs/9.3/static/app-psql.html
+-- Unofficial docs: http://robots.thoughtbot.com/improving-the-command-line-postgres-experience
+
+-- Don't display the "helpful" message on startup.
+\set QUIET 1
+\pset null '[NULL]'
+
+-- http://www.postgresql.org/docs/9.3/static/app-psql.html#APP-PSQL-PROMPTING
+\set PROMPT1 '%[%033[1m%]%M %n@%/%R%[%033[0m%]%# '
+-- PROMPT2 is printed when the prompt expects more input, like when you type
+-- SELECT * FROM<enter>. %R shows what type of input it expects.
+\set PROMPT2 '[more] %R > '
+
+-- Use best available output format
+\x auto
+\set VERBOSITY verbose
+\set HISTFILE ~/.psql_history- :DBNAME
+\set HISTCONTROL ignoredups
+\set COMP_KEYWORD_CASE upper
+\unset QUIET

notebook/Dockerfile

@@ -165,6 +165,7 @@ RUN pip install --quiet --no-cache-dir \
 
 USER ${NB_UID}
 
+COPY --chown=${NB_UID}:${NB_GID} ./.psqlrc ${HOME}/.psqlrc
 COPY --chown=${NB_UID}:${NB_GID} ./.sqliterc ${HOME}/.sqliterc
 
 WORKDIR "${HOME}"