Add PostgreSQL setup files

.env.example

@@ -0,0 +1,2 @@
+POSTGRES_USER=username
+POSTGRES_PASSWORD=password

.gitignore

@@ -21,3 +21,6 @@
 # Go workspace file
 go.work
 
+db-config/db-data/**
+!db-config/db-data/.blank
+.env

db-config/init.sql

@@ -0,0 +1,12 @@
+-- create a table
+CREATE TABLE test(
+  id INT PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
+  name TEXT NOT NULL,
+  archived BOOLEAN NOT NULL DEFAULT FALSE
+);
+
+-- add test data
+INSERT INTO test (name, archived)
+  VALUES ('test row 1', true),
+  ('test row 2', false);
+

docker-compose.yml

@@ -0,0 +1,13 @@
+services:
+  postgres:
+    image: 'postgres:latest'
+    ports:
+      - 5432:5432
+    environment: 
+      POSTGRES_DB: drahoot
+    env_file:
+        - .env
+    volumes:
+      - ./db-config/db-data/:/var/lib/postgresql/data/
+      - ./db-config/init.sql:/docker-entrypoint-initdb.d/init.sql
+    user: "1000:1000"