Merge pull request #6 from kn100/minimize-image

minimise by moving to 'distroless' and using upx

Author: kn100

Dockerfile

@@ -1,12 +1,13 @@
-FROM golang AS build
+FROM golang:bullseye AS build
 WORKDIR /app
+RUN apt-get update && apt-get install upx -y
 COPY go.* /app/
 RUN go mod download
 COPY . .
-RUN go build -ldflags="-s -w" -o telescan 
+ENV CGO_ENABLED=0
+RUN go build -o telescan 
+RUN upx telescan
 
-FROM debian:bookworm-slim AS run
-RUN apt-get update && apt-get install -y ca-certificates
-RUN rm -rf /var/lib/apt/lists/*
+FROM gcr.io/distroless/static-debian11
 COPY --from=build /app/telescan /telescan
 ENTRYPOINT ["/telescan"]