=> ERROR [ 2/14] RUN apt-get -qq update && apt-get -qq -y --no-install-recommends install     ca-certificates     curl     docker.io     libsasl2-dev     netcat     openjdk-11-jdk     sudo     zip &&    rm -r  2.9s
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 > [ 2/14] RUN apt-get -qq update && apt-get -qq -y --no-install-recommends install     ca-certificates     curl     docker.io     libsasl2-dev     netcat     openjdk-11-jdk     sudo     zip &&    rm -rf /var/lib/apt/lists/*:
2.886 E: Package 'netcat' has no installation candidate
2.886 E: Unable to locate package openjdk-11-jdk
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Dockerfile:4
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   3 |     
   4 | >>> RUN apt-get -qq update && apt-get -qq -y --no-install-recommends install \
   5 | >>>     ca-certificates \
   6 | >>>     curl \
   7 | >>>     docker.io \
   8 | >>>     libsasl2-dev \
   9 | >>>     netcat \
  10 | >>>     openjdk-11-jdk \
  11 | >>>     sudo \
  12 | >>>     zip &&\
  13 | >>>     rm -rf /var/lib/apt/lists/*
  14 |     
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ERROR: failed to solve: process "/bin/sh -c apt-get -qq update && apt-get -qq -y --no-install-recommends install     ca-certificates     curl     docker.io     libsasl2-dev     netcat     openjdk-11-jdk     sudo     zip &&    rm -rf /var/lib/apt/lists/*" did not complete successfully: exit code: 100
make: *** [flake8] Error 1