docker run IMAGE MULTIPLE COMMANDS

Question

I m trying to run MULTIPLE commands like this   docker run image cd  path to somewhere  amp  amp  python a py   But this gives me  No such file or directory  error because it is interpreted as      docker run image cd  path to somewhere   amp  amp   python a py    It seems that some ESCAPE characters like    or    are needed   So I also tried   docker run image  cd  path to somewhere  amp  amp  python a py  docker run image  cd  path to somewhere  amp  amp  python a py    but these didn t work   I have searched for Docker Run Reference but have not find any hints about ESCAPE characters

User · Answer

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

RES_FILE=$(readlink -f /tmp/result.txt)

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

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

User · Answer

You can do this a couple of ways    Use the -w option to change the working directory      -w  --workdir              Working directory inside the container   https   docs docker com engine reference commandline run  set-working-directory--w Pass the entire argument to  bin bash   docker run image  bin bash -c  cd  path to somewhere  python a py

User · Answer

For anyone else who came here looking to do the same with docker-compose you just need to prepend bash -c and enclose multiple commands in quotes  joined together with  amp  amp    So in the OPs example docker-compose run image bash -c  cd  path to somewhere  amp  amp  python a py

User · Answer

You can also pipe commands inside Docker container  bash -c   lt command1 gt     lt command2 gt   for example    docker run img  bin bash -c  ls -1   wc -l    But  without invoking the shell in the remote the output will be redirected to the local terminal

User · Answer

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 Starting a shell in the Docker Alpine container which implies using sh or ash or  bin sh or  bin ash    Based on the OP s question   docker run image sh -c  cd  path to somewhere  amp  amp  python a py

User · Answer

bash -c 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   cat script sh   docker run -i  lt image gt   bin bash

User · Answer

To run multiple commands in docker  use  bin bash -c and semicolon    docker run image name  bin bash -c  cd  path to somewhere  python a py    In case we need command2  python  will be executed if and only if command1  cd  returned zero  no error  exit status  use  amp  amp  instead of    docker run image name  bin bash -c  cd  path to somewhere  amp  amp  python a py

[docker] docker run <IMAGE> <MULTIPLE COMMANDS>

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