Bring Back ENV var for docker db

config/docker.env

@@ -4,4 +4,7 @@ DATABASE_USER=postgres
 DATABASE_HOST=db
 DATABASE_URL=ecto://postgres:postgres@db/postgres
 PORT=4000
+HOSTNAME=localhost
+POSTGRES_PASSWORD=postgres
+LANG=en_US.UTF-8s
 # PROXY="http://sample.com:8080"
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