Merge pull request '[DO-169] replace image' (#3) from feature/DO-169/add_build into master

Reviewed-on: https://git.avroid.tech/Tools/Addlicense/pulls/3

Dockerfile

@@ -1,4 +1,6 @@
-FROM golang:1.22 AS build
+ARG DOCKER_REGISTRY=harbor.avroid.tech/docker-hub-proxy/library
+
+FROM ${DOCKER_REGISTRY}/golang:1.22 AS build
 
 WORKDIR /app
 
@@ -11,10 +13,15 @@ RUN CGO_ENABLED=0 GOOS=linux go build .
 
 
 # make a bare minimal image
-FROM scratch
+FROM ${DOCKER_REGISTRY}/alpine:3.19
+
+RUN apk update \
+    && apk add musl-dev \
+    && rm -rf /var/cache/apk/*
 
 # source to be scanned should be mounted to /src
 WORKDIR /src
+
 COPY --from=build /app/addlicense /app/addlicense
 
 ENTRYPOINT ["/app/addlicense"]