blocks|key|4534380|text|要在docker中运行多个命令，请使用/bin/bash+-c和分号;|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4534381|docker+run+image_name+/bin/bash+-c+"cd+/path/to/somewhere;+python+a.py"|code-block|syntax|javascript|4534382|如果我们需要command2+(python)将被执行当且仅当command1+(cd)返回零(无错误)退出状态时，使用&&而不是;|4534383|docker+run+image_name+/bin/bash+-c+"cd+/path/to/somewhere+&&+python+a.py"|4534384|entityMap^0|J|C|Y|1|0|0|1O|2|1T|1|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|P|$]]

To run multiple commands in docker, use <code>/bin/bash -c</code> and semicolon <code>;</code>

<pre><code>docker run image_name /bin/bash -c "cd /path/to/somewhere; python a.py"
</code></pre>

In case we need command2 (python) will be executed if and only if command1 (cd) returned zero (no error) exit status, use <code>&amp;&amp;</code> instead of <code>;</code>

<pre><code>docker run image_name /bin/bash -c "cd /path/to/somewhere &amp;&amp; python a.py"
</code></pre>

blocks|key|26918|text|您还可以在Docker容器中使用管道命令，例如bash+-c+"<command1>+%7C+<command2>"：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|26919|docker+run+img+/bin/bash+-c+"ls+-1+%7C+wc+-l"|code-block|syntax|javascript|26920|但是，在不调用远程中的shell的情况下，输出将被重定向到本地终端。|26921|entityMap^0|N|X|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

You can also pipe commands inside Docker container, <code>bash -c "&lt;command1&gt; | &lt;command2&gt;"</code> for example: 

<pre><code>docker run img /bin/bash -c "ls -1 | wc -l"
</code></pre>

But, without invoking the shell in the remote the output will be redirected to the local terminal.

blocks|key|26956|text|如果您希望将结果存储在容器外部的本地计算机中的一个文件中，您可以这样做。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|26957|RES_FILE=$(readlink+-f+/tmp/result.txt)

docker+run+--rm+-v+${RES_FILE}:/result.txt+img+bash+-c+"cat+/etc/passwd+%7C+grep+root+>+/result.txt"|code-block|syntax|javascript|26958|命令的结果将在本地计算机的/tmp/result.txt中可用。|offset|length|style|CODE|26959|entityMap^0|0|0|D|F|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

If you want to store the result in one file outside the container, in your local machine, you can do something like this.

<pre><code>RES_FILE=$(readlink -f /tmp/result.txt)

docker run --rm -v ${RES_FILE}:/result.txt img bash -c "cat /etc/passwd | grep root &gt; /result.txt"
</code></pre>

The result of your commands will be available in <code>/tmp/result.txt</code> in your local machine.

blocks|key|27002|text|对于其他来到这里希望使用docker-compose做同样事情的人，您只需在bash+-c前面加上引号并用引号将多个命令与&&连接起来即可。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|27003|因此，在操作示例中，docker-compose+run+image+bash+-c+"cd+/path/to/somewhere+&&+python+a.py"|27004|entityMap^0|C|E|12|7|1P|2|0|A|1Z|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|I|$]]

For anyone else who came here looking to do the same with <code>docker-compose</code> you just need to prepend <code>bash -c</code> and enclose multiple commands in quotes, joined together with <code>&amp;&amp;</code>.

So in the OPs example <code>docker-compose run image bash -c "cd /path/to/somewhere &amp;&amp; python a.py"</code>

blocks|key|4534583|text|从@Eddy+Hernandez的评论中给出一个恰当的答案，这是非常正确的，因为阿尔卑斯山是用ash而不是bash。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4534584|现在的问题涉及到Starting+a+shell+in+the+Docker+Alpine+container，它意味着使用sh、ash、/bin/sh或/bin/ash/。|offset|length|style|CODE|4534585|基于操作员的问题：|4534586|docker+run+image+sh+-c+"cd+/path/to/somewhere+&&+python+a.py"|4534587|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/35689628/starting-a-shell-in-the-docker-alpine-container^0|0|1Q|2|1T|3|1X|7|25|9|8|1B|0|0|0|0|1P|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@$D|V|E|W|F|G]|$D|X|E|Y|F|G]|$D|Z|E|10|F|G]|$D|11|E|12|F|G]]|9|@$D|13|E|14|1|15]]|A|$]]|$1|H|3|I|5|6|7|16|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|17|8|@$D|18|E|19|F|G]]|9|@]|A|$]]|$1|L|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S]]]]

Just to make a proper answer from the @Eddy Hernandez's comment and which is very correct since Alpine comes with ash not bash. 

The question now referes to <a href="https://stackoverflow.com/questions/35689628/starting-a-shell-in-the-docker-alpine-container">Starting a shell in the Docker Alpine container</a> which implies using <code>sh</code> or <code>ash</code> or <code>/bin/sh</code> or <code>/bin/ash/</code>.

Based on the OP's question:

<code>docker run image sh -c "cd /path/to/somewhere &amp;&amp; python a.py"</code>

blocks|key|27183|text|如果您正在运行的命令相对简单，则bash+-c可以很好地工作。但是，如果您试图运行一长串充满控制字符的命令，情况可能会变得复杂。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|27184|我成功地解决了这个问题，方法是将我的命令从外部输入到进程中。|27185|cat+script.sh+%7C+docker+run+-i+<image>+/bin/bash|27186|entityMap^0|G|7|0|0|0|1B|0^^$0|@$1|2|3|4|5|6|7|L|8|@$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|J|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|K|$]]

<code>bash -c</code> works well if the commands you are running are relatively simple. However, if you're trying to run a long series of commands full of control characters, it can get complex. 

I successfully got around this by piping my commands into the process from the outside, i.e.

<code>cat script.sh | docker run -i &lt;image&gt; /bin/bash</code>

blocks|key|27234|text|如果不是很明显，如果a.py总是需要在特定目录中运行，那么可以创建一个简单的包装器脚本来执行cd，然后运行该脚本。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|27235|在您的Dockerfile中，替换|27236|CMD+[+'python',+'a.py'+]|code-block|syntax|javascript|27237|或者其他什么东西|27238|CMD+[+'/wrapper'+]|27239|并在您的根目录(或您方便的任何地方)中创建一个脚本wrapper，其内容如下|27240|#!/bin/sh
set+-e
cd+/path/to/somewhere
python+a.py|27241|在许多情况下，也许还可以考虑重写a.py，这样它就不需要包装器了。或者让它在需要的位置使用os.chdir()，或者让它在您在其环境中配置的目录或类似目录中查找其数据文件。|27242|entityMap^0|A|4|1A|2|0|3|A|0|0|0|0|P|7|0|0|G|4|19|A|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|13|8|@$9|14|A|15|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|16|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|17|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|18|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|19|8|@$9|1A|A|1B|B|C]]|D|@]|E|$]]|$1|S|3|T|5|J|7|1C|8|@]|D|@]|E|$K|L]]|$1|U|3|V|5|6|7|1D|8|@$9|1E|A|1F|B|C]|$9|1G|A|1H|B|C]]|D|@]|E|$]]|$1|W|3|-4|5|6|7|1I|8|@]|D|@]|E|$]]]|X|$]]

In case it's not obvious, if <code>a.py</code> always needs to run in a particular directory, create a simple wrapper script which does the <code>cd</code> and then runs the script.
In your <code>Dockerfile</code>, replace
<pre><code>CMD [ 'python', 'a.py' ]
</code></pre>
or whatever with
<pre><code>CMD [ '/wrapper' ]
</code></pre>
and create a script <code>wrapper</code> in your root directory (or wherever it's convenient for you) with contents like
<pre class="lang-sh prettyprint-override"><code>#!/bin/sh
set -e
cd /path/to/somewhere
python a.py
</code></pre>
In many situations, perhaps also consider rewriting <code>a.py</code> so that it doesn't need a wrapper. Either make it <code>os.chdir()</code> where it needs to be, or have it look for its data files in a directory you configure in its environment or similar.

blocks|key|27253|text|如果您不介意在子set中运行命令，只需在要运行的多个命令周围加上一组外括号：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|27254|docker+run+image+(cd+/path/to/somewhere+&&+python+a.py)|code-block|syntax|javascript|27255|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

If you don't mind the commands running in a subshell, just put a set of outer parentheses around the multiple commands to run:
<pre><code>docker run image (cd /path/to/somewhere &amp;&amp; python a.py)
</code></pre>

I'm trying to run MULTIPLE commands like this.

<pre><code>docker run image cd /path/to/somewhere &amp;&amp; python a.py
</code></pre>

But this gives me "No such file or directory" error because it is interpreted as...

<pre><code>"docker run image cd /path/to/somewhere" &amp;&amp; "python a.py"
</code></pre>

It seems that some ESCAPE characters like "" or () are needed.

So I also tried 

<pre><code>docker run image "cd /path/to/somewhere &amp;&amp; python a.py"
docker run image (cd /path/to/somewhere &amp;&amp; python a.py)
</code></pre>

but these didn't work.

I have searched for <a href="https://docs.docker.com/reference/run/">Docker Run Reference</a> but have not find any hints about ESCAPE characters.

docker run <IMAGE> <MULTIPLE COMMANDS>

容器

Docker

我正在尝试运行多个这样的命令。docker run image cd /path/to/somewhere && python a.py但这给了我“没有这样的文件或目录”错误，因为它被解释为..."docker run image cd /path/to/somewhere" && "python a.py"似乎需要一...

问docker run <IMAGE> <MULTIPLE COMMANDS>
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