Refactor Docker setup and update API description

- Updated docker-compose.yml to use context and dockerfile for the app service, and removed unnecessary db service configuration.
- Modified Dockerfile to use the official Rust nightly image and streamlined the build process with updated working directories and runtime dependencies.
- Changed API description in root handler to reflect the correct endpoint for fetching the current hospital.

Dockerfile

@@ -1,33 +1,35 @@
-FROM rust:1.76-slim-bullseye as builder
+# Use the official Rust nightly image as a build environment
+FROM rustlang/rust:nightly-slim as builder
 
-WORKDIR /usr/src/app
+# Install build dependencies
+RUN apt-get update && apt-get install -y \
+    pkg-config \
+    libssl-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Create a new empty shell project
+WORKDIR /usr/src/hospitalapi
+
+# Copy the source code
 COPY . .
 
 # Build the application
 RUN cargo build --release
 
-# Create a new stage with a minimal image
-FROM debian:bullseye-slim
+# Use a minimal runtime image
+FROM debian:bookworm-slim
 
-WORKDIR /usr/local/bin
-
-# Install necessary runtime dependencies
-RUN apt-get update && apt-get install -y --no-install-recommends \
+# Install runtime dependencies
+RUN apt-get update && apt-get install -y \
     ca-certificates \
+    libssl3 \
     && rm -rf /var/lib/apt/lists/*
 
-# Copy the built binary from the builder stage
-COPY --from=builder /usr/src/app/target/release/hospitalapi .
+# Copy the binary from the builder stage
+COPY --from=builder /usr/src/hospitalapi/target/release/hospitalapi /usr/local/bin/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
+# Set the working directory
+WORKDIR /usr/local/bin
 
 # Run the application
-CMD ["./hospitalapi"] 
+CMD ["hospitalapi"] 

docker-compose.yml

@@ -2,30 +2,13 @@ version: '3.8'
 
 services:
   app:
-    build: .
+    build:
+      context: .
+      dockerfile: Dockerfile
     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
+      - HOST=${HOST}
+      - PORT=${PORT}
+      - DATABASE_URL=${DATABASE_URL}
     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: 

src/handlers/root.rs

@@ -12,7 +12,7 @@ pub async fn root_handler() -> Json<ApiInfo> {
     let info: ApiInfo = ApiInfo {
         name: "HospitalAPI",
         version: "0.1",
-        description: "This API provides you with the current hospital on duty in luxembourg city. Call the /getHospital endpoint.",
+        description: "This API provides you with the current hospital on duty in luxembourg city. Call the /current-hospital endpoint.",
     };
     Json(info)
 }