FROM alpine:latest as builder RUN sed -i s/v3.18/edge/ /etc/apk/repositories RUN apk upgrade --no-cache RUN apk --no-cache add openjdk20 WORKDIR /workdir COPY . . RUN javac -cp .:lib/gson-2.10.1.jar ./planetwars/*.java Example.java FROM alpine:latest RUN sed -i s/v3.18/edge/ /etc/apk/repositories RUN apk --no-cache add openjdk20-jre RUN apk upgrade --no-cache WORKDIR /workdir COPY --from=builder /workdir /workdir CMD java -cp .:lib/gson-2.10.1.jar Example