Propagate XNAT_DATASOURCE_PASSWORD from .env file to ./postgres/XNAT.sql

Fixes #54

docker-compose.yml

@@ -25,7 +25,10 @@ services:
       - XNAT_HOME=/data/xnat/home
 
   xnat-db:
-    build: ./postgres
+    build:
+      context: ./postgres
+      args:
+        XNAT_DATASOURCE_PASSWORD: ${XNAT_DATASOURCE_PASSWORD}
     expose:
       - "5432"
     volumes:

postgres/Dockerfile

@@ -1,5 +1,7 @@
 FROM postgres:12.2-alpine
 
+ARG XNAT_DATASOURCE_PASSWORD=${XNAT_DATASOURCE_PASSWORD}
+
 # Default uid and gid for postgres is 70, override by building xnat-db
 # container explicitly with --build-arg options:
 #
@@ -13,4 +15,5 @@ RUN if [[ ! -z "${POSTGRES_GID}" && "${POSTGRES_GID}" != 70 ]]; then \
     fi;
 
 ADD --chown=postgres:postgres XNAT.sql /docker-entrypoint-initdb.d/
+RUN sed -i "s/XNAT_DATASOURCE_PASSWORD/${XNAT_DATASOURCE_PASSWORD}/" /docker-entrypoint-initdb.d/XNAT.sql
 

postgres/XNAT.sql

@@ -1,3 +1,3 @@
 CREATE USER xnat NOCREATEDB;
 CREATE DATABASE xnat OWNER xnat;
-ALTER USER xnat WITH PASSWORD 'xnat';
+ALTER USER xnat WITH PASSWORD 'XNAT_DATASOURCE_PASSWORD';