Add docker file

Author: UnwilledTangent

apps/matching-service/Dockerfile

@@ -0,0 +1,27 @@
+# Stage 1: Build Go Application
+
+FROM golang:1.23 AS builder
+
+WORKDIR /usr/src/app
+
+COPY go.mod go.sum ./
+
+RUN go mod tidy && go mod download && go mod verify
+
+# Copy the .env file to the final image
+COPY .env /usr/src/app/.env
+
+COPY . .
+
+RUN go build -v -o /usr/local/bin/app ./main.go
+
+# Stage 2: Setup Redis and combine with Go
+FROM redis:latest
+
+# Copy the built Go binary from the builder stage
+COPY --from=builder /usr/local/bin/app /usr/local/bin/app
+
+EXPOSE 8081 6379
+
+# Start both Redis and the Go application
+CMD ["sh", "-c", "redis-server & app; wait"]

apps/matching-service/README.md

@@ -121,6 +121,14 @@ Make sure to open the HTML file in a web browser while the WebSocket server is r
 
 You can open one instance of the HTML file in multiple tabs to simulate multiple clients connecting to the server. (In the future: ensure that only one connection is allowed per user)
 
-## Docker Support
+## Running the Application via Docker
 
-TODO: Add section for Docker setup and usage instructions.
+To run the application via Docker, run the following command:
+
+```bash
+docker build -t matching-service .
+```
+
+```bash
+docker run -d -p 8081:8081 -p 6379:6379 --name matching-service-container matching-service
+```