Changing variable names.

Author: ssuareza

README.md

@@ -7,7 +7,7 @@ This client is compatible with the official postgresql image, which means that i
 ### Create a postgres database
 
 ```
-docker run -e POSTGRES_HOST=host POSTGRES_USER=user -e POSTGRES_PASS=pwd -d --name=postgresql-client "CREATE DATABASE mydb;"
+docker run -e DB_HOST=host DB_USER=user -e DB_PASS=pwd -d --name=postgresql-client "CREATE DATABASE mydb;"
 ```
 
 ### Use psql or pg_dump command

entrypoint.sh

@@ -1,5 +1,5 @@
 #!/bin/sh
-echo "${POSTGRES_HOST}":*:*:"${POSTGRES_USER}":"${POSTGRES_PASS}" > ~/.pgpass
+echo "${DB_HOST}":*:*:"${DB_USER}":"${DB_PASS}" > ~/.pgpass
 chmod 0600 ~/.pgpass
-psql -h ${POSTGRES_HOST} -U ${POSTGRES_USER} -w postgres -c "$@"
+psql -h ${DB_HOST} -U ${DB_USER} -w postgres -c "$@"
 exit 0