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This variant is useful when final image size being as small as possible is your primary concern. The main caveat to note is that it does use musl libc instead of glibc and friends, so software will often run into issues depending on the depth of their libc requirements/assumptions. See this Hacker News comment thread for more discussion of the issues that might arise and some pro/con comparisons of using Alpine-based images.
openjdk:<version>
: Debian 기반openjdk:<version>-alpine
: Alpine Linux 기반FROM openjdk:8-alpine # Timezone 보정 RUN apk add tzdata RUN cp /usr/share/zoneinfo/Asia/Seoul /etc/localtime RUN echo "Asia/Seoul" > /etc/timezone ENV LANG=ko_KR.UTF-8 # Java application 실행 설정 COPY . /usr/src/myapp WORKDIR /usr/src/myapp RUN javac Main.java CMD ["java", "Main"]