comments added to Dockerfile

Dockerfile

@@ -1,21 +1,24 @@
 FROM golang:1.22.3-bullseye
 
+# Install dependencies
 WORKDIR /app
-
 COPY go.mod go.sum ./
 RUN go mod download
 
+# Compile server
 COPY hub/* ./
-
 RUN CGO_ENABLED=0 GOOS=linux go build -o ./server
 
+# Create user with only necessary access
 RUN adduser --system --uid 1001 go
 RUN chown go ./server
+
+# Change to new user
 USER go
 WORKDIR /app
 
+# Exposing port 80 (probably already exposed)
+EXPOSE 80
 
-
-EXPOSE 3000 
-
+# Run server
 CMD ["./server"]