Updates elixir and postgres

bump/Dockerfile

@@ -1,6 +1,6 @@
 # Elixir + Phoenix
 
-FROM elixir:1.12.2
+FROM elixir:latest
 
 # Install debian packages
 RUN apt-get update
@@ -12,5 +12,6 @@ RUN mix local.rebar --force
 RUN mix archive.install hex phx_new --force
 
 COPY setup.sh /usr/local/bin/
+RUN chmod +x /usr/local/bin/setup.sh
 EXPOSE 4012
 ENTRYPOINT ["setup.sh"]

docker-compose.yml

@@ -1,7 +1,8 @@
 version: '3'
 services:
   database:
-      image: postgres
+      image: postgres:15
+      container_name: bump-database
       environment:
           - POSTGRES_USER=postgres
           - POSTGRES_PASSWORD=postgres