use upx and use alpine base image for running the app

Dockerfile

@@ -1,11 +1,13 @@
 # Build Stage: Build bot using the golang image
 FROM golang:1.20-alpine AS builder
+RUN apk add --no-cache curl wget gnupg git upx
 WORKDIR /app
 COPY . .
-RUN CGO_ENABLED=0 GOOS=`go env GOHOSTOS` GOARCH=`go env GOHOSTARCH` go build -o out/aliveimage
+RUN CGO_ENABLED=0 GOOS=`go env GOHOSTOS` GOARCH=`go env GOHOSTARCH` go build -o out/aliveimage -ldflags="-w -s" .
+RUN upx --brute out/aliveimage
 
 # Final Stage: Use a smaller base image and only include necessary files
-FROM scratch
+FROM alpine:3.18
 COPY --from=builder /app/out/aliveimage /app/aliveimage
 ENV API_LISTEN_PORT=8080
 EXPOSE $API_LISTEN_PORT