chore: Update Dockerfile (#29)

Dockerfile

@@ -1,9 +1,8 @@
-FROM golang:1.22-alpine3.20 as builder
+FROM golang:1.23-alpine3.21 AS builder
 WORKDIR /app
 RUN apk --update add --no-cache ca-certificates tzdata make && update-ca-certificates
 COPY . .
-RUN export GOPATH="/root/go" && make tools
-RUN make build
+RUN export GOPATH="/root/go" && make build
 
 # Pach binary file
 RUN apk add upx
@@ -14,4 +13,6 @@ COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
 COPY --from=builder /usr/share/zoneinfo /usr/share/zoneinfo/
 COPY --from=builder /app/bin/app /
 
+EXPOSE 8089
+
 ENTRYPOINT ["/app"]