15 lines
328 B
Docker
15 lines
328 B
Docker
FROM ubuntu:18.04
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RUN set -x \
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&& apt-get update \
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&& apt-get install -y \
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netcat \
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&& rm -rf /var/lib/apt/lists/*
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# Accept a host and port parameter.
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ENV host localhost
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ENV port 8080
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# Spin until we make a successful request.
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CMD ["sh", "-c", "while ! nc -zv $host $port; do true; done"]
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