updting docker file

Dockerfile

@@ -1,13 +1,32 @@
-FROM golang:1.19-alpine as builder
+# Start with the official Golang base image
+FROM golang:1.20-alpine AS builder
+
+# Set the Current Working Directory inside the container
 WORKDIR /app
-COPY go.mod .
-COPY go.sum .
-RUN apk add build-base
+
+# Copy go mod and sum files
+COPY go.mod go.sum ./
+
+# Download all dependencies. Dependencies will be cached if the go.mod and go.sum files are not changed
 RUN go mod download
+
+# Copy the source code into the container
 COPY . .
-RUN apk add --no-cache git && go build -o discord-sepio ./src && apk del git
 
-FROM alpine
-WORKDIR /app
-COPY --from=builder /app/discord-sepio .
-CMD [ "./discord-sepio" ]
+# Build the Go app
+RUN go build -o main .
+
+# Start a new stage from scratch
+FROM alpine:latest  
+
+# Set the Current Working Directory inside the container
+WORKDIR /root/
+
+# Copy the Pre-built binary file from the previous stage
+COPY --from=builder /app/main .
+
+# Expose port 8080 to the outside world
+EXPOSE 8080
+
+# Command to run the executable
+CMD ["./main"]