still working on postgres

Dockerfile

@@ -1,5 +1,6 @@
-FROM mahuntington/student:zsh
+FROM mahuntington/student:postgres
 
 WORKDIR /home/student
 
-CMD ["sudo", "pg_ctlcluster", "15", "main", "start"]
+CMD ["pg_ctlcluster", "15", "main", "start", "--foreground"]
+#RUN ["postgres", "-c", "max_connections=300"]

compose.yaml

@@ -2,8 +2,14 @@ version: '3'
 
 services:
   student:
-    image: mahuntington/student:zsh
+    image: mahuntington/student:postgres
     command: /bin/sh
     stdin_open: true
     tty: true
     container_name: student
+    links:
+      - postgres
+
+  postgres:
+    image: mahuntington/student:postgres
+    command: ["pg_ctlcluster", "15", "main", "start", "--foreground"]