feat: postgres docker compose

.gitignore

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+.env
+.venv
+frontend

.gitmodules

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+[submodule "backend"]
+	path = backend
+	url = git@git.opsmonsters.in:opsmonsters/lolita-backend.git

backend

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+Subproject commit df20ceb45125c259dac552807f2cd08db44cf0e7

docker-compose.yaml

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+services:
+  postgres:
+    image: postgres:15
+    container_name: my_postgres
+    restart: unless-stopped
+    ports:
+      - "${POSTGRES_PORT}:5432"
+    environment:
+      POSTGRES_USER: ${POSTGRES_USER}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
+      POSTGRES_DB: ${POSTGRES_DB}
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+      - ./init.sql:/docker-entrypoint-initdb.d/init.sql
+
+volumes:
+  postgres_data:
+

init.sql

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+CREATE TABLE IF NOT EXISTS users (
+    id SERIAL PRIMARY KEY,
+    email VARCHAR(255) UNIQUE NOT NULL,
+    hashed_password VARCHAR(255) NOT NULL,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS otps (
+    id SERIAL PRIMARY KEY,
+    email VARCHAR(255) NOT NULL,
+    otp VARCHAR(6) NOT NULL,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
+);