具有动态链接程序的多阶段Docker构建

Question

我正在使用多步构建将动态链接的c程序与docker打包在一起，但是我缺少一个库或其他东西：

FROM debian:9.5-slim as builder

WORKDIR /openconnect

RUN apt update && apt install -y  \
    build-essential \
    gettext \
    autoconf \
    automake \
    libproxy-dev \
    libxml2-dev \
    libtool \
    vpnc-scripts \
    pkg-config \
    libgnutls28-dev

ADD . .

RUN ./autogen.sh
RUN ./configure \
        --with-vpnc-script=/etc/vpnc/vpnc-script \
        --without-openssl-version-check
RUN make
RUN make install
RUN ldconfig


FROM builder as gatherer

RUN mkdir /gathered
RUN ldd /usr/local/sbin/openconnect | grep "=> /" | awk '{print $3}' |  xargs -I '{}' sh -c "cp -v --parents {} /gathered"
RUN cp --parents /usr/local/sbin/openconnect /gathered


FROM debian:9-slim
COPY --from=gatherer /gathered /
ENTRYPOINT ["/usr/local/sbin/openconnect"]

我运行容器时得到：

/usr/local/sbin/openconnect: error while loading shared libraries: libopenconnect.so.5: cannot open shared object file: No such file or directory

我已验证最终映像中存在“ /usr/local/lib/libopenconnect.so.5”。另外，如果我跳过多级操作，那么容器运行就很好。

我想念什么？