Explicitly set progress to plain for easier debugging, label the final stage of the build

Dockerfile

@@ -18,7 +18,7 @@ RUN apk add curl &&\
 	ln -s "forge-${MINECRAFT_VERSION}-${FORGE_VERSION}.jar" server.jar
 
 # Stuff them in a smaller container with fewer layers
-FROM alpine:latest
+FROM alpine:latest AS final
 RUN apk add bash rsync screen &&\
 	apk add "${JRE_VERSION}"
 WORKDIR /minecraft

build.sh

@@ -46,6 +46,7 @@ for mc in ${mcversions[@]}; do
 		--build-arg JRE_VERSION="$jre" \
 		--no-cache \
 		--platform linux/amd64 \
+		--progress plain \
 		--tag "$tag" \
 		--push \
 		.