Replace local Docker PostgreSQL with external DB via .env

Remove docker-compose.yml and use JDBC_URL from .env for all
profiles. Makefile now exports .env variables automatically.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitignore

@@ -20,3 +20,4 @@ resources/public/css/output.css
 .calva/output-window/
 .lsp/.cache/
 .token
+.env

Makefile

@@ -1,3 +1,6 @@
+include .env
+export
+
 clean:
 	rm -rf target
 

docker-compose.yml

@@ -1,14 +0,0 @@
-services:
-  postgres:
-    image: postgres:16-alpine
-    environment:
-      POSTGRES_DB: elprice
-      POSTGRES_USER: elprice
-      POSTGRES_PASSWORD: elprice
-    ports:
-      - "5432:5432"
-    volumes:
-      - pgdata:/var/lib/postgresql/data
-
-volumes:
-  pgdata:

resources/system.edn

@@ -47,8 +47,8 @@
   :env #ig/ref :system/env}
 
  :db.sql/connection
- #profile {:dev {:jdbc-url "jdbc:postgresql://localhost:5432/elprice?user=elprice&password=elprice"}
+ #profile {:dev {:jdbc-url #env JDBC_URL}
-           :test {:jdbc-url "jdbc:postgresql://localhost:5432/elprice?user=elprice&password=elprice"}
+           :test {:jdbc-url #env JDBC_URL}
            :prod {:jdbc-url #env JDBC_URL
                   :init-size 1
                   :min-idle 1