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Update ubuntu version to 18.04
Signed-off-by: khs1994 <khs1994@khs1994.com>
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@@ -17,7 +17,7 @@
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假设我们需要一个得知自己当前公网 IP 的镜像,那么可以先用 `CMD` 来实现:
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```Dockerfile
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FROM ubuntu:16.04
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FROM ubuntu:18.04
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RUN apt-get update \
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&& apt-get install -y curl \
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&& rm -rf /var/lib/apt/lists/*
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@@ -49,7 +49,7 @@ $ docker run myip curl -s http://ip.cn -i
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这显然不是很好的解决方案,而使用 `ENTRYPOINT` 就可以解决这个问题。现在我们重新用 `ENTRYPOINT` 来实现这个镜像:
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```Dockerfile
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FROM ubuntu:16.04
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FROM ubuntu:18.04
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RUN apt-get update \
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&& apt-get install -y curl \
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&& rm -rf /var/lib/apt/lists/*
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