Quarkus Base Runtime Image

为了简化本机可执行文件的容器化,Quarkus 提供了一个基本映像,用于提供运行这些可执行文件的要求。quarkus-micro-image:2.0 映像是:

  • small (based on ubi8-micro)

  • designed for containers

  • 包含正确的一组依赖项(glibc、libstdc++、zlib)

  • 支持 upx 压缩的可执行文件(有关 enabling compression documentation 的更多详细信息)

Using the base image

在您的 Dockerfile 中,只需使用:

FROM quay.io/quarkus/quarkus-micro-image:2.0
WORKDIR /work/
COPY target/*-runner /work/application
RUN chmod 775 /work
EXPOSE 8080
CMD ["./application", "-Dquarkus.http.host=0.0.0.0"]

Extending the image

您的应用程序可能还有其他要求。例如,如果您有一个需要 libfreetype.so 的应用程序,则需要将本机库复制到容器中。在这种情况下,您需要使用多阶段 dockerfile 来复制所需的库:

# First stage - install the dependencies in an intermediate container
FROM registry.access.redhat.com/ubi8/ubi-minimal:8.10 as BUILD
RUN microdnf install freetype

# Second stage - copy the dependencies
FROM quay.io/quarkus/quarkus-micro-image:2.0
COPY --from=BUILD \
   /lib64/libfreetype.so.6 \
   /lib64/libbz2.so.1 \
   /lib64/libpng16.so.16 \
   /lib64/

WORKDIR /work/
COPY target/*-runner /work/application
RUN chmod 775 /work
EXPOSE 8080
CMD ["./application", "-Dquarkus.http.host=0.0.0.0"]

如果您需要访问完整 AWT 支持,您需要不仅仅是 libfreetype.so,还需要字体和字体配置:

# First stage - install the dependencies in an intermediate container
FROM registry.access.redhat.com/ubi8/ubi-minimal:8.10 as BUILD
RUN microdnf install freetype fontconfig

# Second stage - copy the dependencies
FROM quay.io/quarkus/quarkus-micro-image:2.0
COPY --from=BUILD \
   /lib64/libfreetype.so.6 \
   /lib64/libgcc_s.so.1 \
   /lib64/libbz2.so.1 \
   /lib64/libpng16.so.16 \
   /lib64/libm.so.6 \
   /lib64/libbz2.so.1 \
   /lib64/libexpat.so.1 \
   /lib64/libuuid.so.1 \
   /lib64/

COPY --from=BUILD \
   /usr/lib64/libfontconfig.so.1 \
   /usr/lib64/

COPY --from=BUILD \
    /usr/share/fonts /usr/share/fonts

COPY --from=BUILD \
    /usr/share/fontconfig /usr/share/fontconfig

COPY --from=BUILD \
    /usr/lib/fontconfig /usr/lib/fontconfig

COPY --from=BUILD \
     /etc/fonts /etc/fonts

WORKDIR /work/
COPY target/*-runner /work/application
RUN chmod 775 /work
EXPOSE 8080
CMD ["./application", "-Dquarkus.http.host=0.0.0.0"]

Alternative - Using ubi-minimal

如果微型镜像不符合您的要求,可使用 ubi8/ubi-minimal,这是一个更大的镜像,但包含更多实用工具,并且更接近完整的 Linux 发行版。通常,它包含一个程序包管理器 (microdnf),以便您可以更方便地安装程序包。

要使用此基础镜像,请使用以下 Dockerfile

FROM registry.access.redhat.com/ubi8/ubi-minimal:8.10
WORKDIR /work/
RUN chown 1001 /work \
    && chmod "g+rwX" /work \
    && chown 1001:root /work
COPY --chown=1001:root target/*-runner /work/application

EXPOSE 8080
USER 1001

CMD ["./application", "-Dquarkus.http.host=0.0.0.0"]