Add Docker support with Dockerfile and docker-compose.yml

- Introduced a Dockerfile for building the application using a multi-stage build process.
- Added docker-compose.yml to define services for the application and PostgreSQL database.
- Updated README.md with instructions for running the application using Docker and Docker Compose.

Dockerfile

@@ -0,0 +1,33 @@
+FROM rust:1.76-slim-bullseye as builder
+
+WORKDIR /usr/src/app
+COPY . .
+
+# Build the application
+RUN cargo build --release
+
+# Create a new stage with a minimal image
+FROM debian:bullseye-slim
+
+WORKDIR /usr/local/bin
+
+# Install necessary runtime dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy the built binary from the builder stage
+COPY --from=builder /usr/src/app/target/release/hospitalapi .
+
+# Create a directory for the .env file
+RUN mkdir -p /usr/src/app
+WORKDIR /usr/src/app
+
+# Copy the .env file
+COPY .env .
+
+# Expose the port the app runs on
+EXPOSE 3000
+
+# Run the application
+CMD ["./hospitalapi"] 

README.md

@@ -79,6 +79,34 @@ All system events are logged with timestamps in the format:
 [YYYY-MM-DD HH:MM:SS] Message
 ```
 
+## Docker Setup
+
+### Prerequisites
+
+- Docker
+- Docker Compose
+
+### Running with Docker
+
+1. Make sure you have a `.env` file in the project root with the necessary configuration.
+
+2. Build and start the containers:
+   ```bash
+   docker-compose up -d
+   ```
+
+3. To view logs:
+   ```bash
+   docker-compose logs -f
+   ```
+
+4. To stop the application:
+   ```bash
+   docker-compose down
+   ```
+
+The application will be available at http://localhost:3000.
+
 ## License
 
 This project is licensed under the GNU General Public License v3.0 (GPL-3.0). This license ensures that:

docker-compose.yml

@@ -0,0 +1,31 @@
+version: '3.8'
+
+services:
+  app:
+    build: .
+    ports:
+      - "3000:3000"
+    depends_on:
+      - db
+    environment:
+      - DATABASE_URL=postgres://postgres:postgres@db/hospitaldb
+      - HOST=0.0.0.0
+      - PORT=3000
+    volumes:
+      - ./.env:/usr/src/app/.env
+    restart: unless-stopped
+
+  db:
+    image: postgres:14
+    environment:
+      - POSTGRES_USER=postgres
+      - POSTGRES_PASSWORD=postgres
+      - POSTGRES_DB=hospitaldb
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    ports:
+      - "5432:5432"
+    restart: unless-stopped
+
+volumes:
+  postgres_data: