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docker run normally returns the output of the command it runs. I need to pass some data to docker, run a command that processes the data, and return the output. When I use the -i option, no output is returned. Consider this simple example:
echo hello | docker run -i base wc
It returns no output. How can I get the output from docker when using the -i option?
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You can use COPY or ADD command within Dockerfile to copy your file/code into the Docker container. The following Dockerfile example shows how to add the current working directory files and folders into the directory /usr/Qxf2_POM of the container image.
The docker run command creates a container from a given image and starts the container using a given command. It is one of the first commands you should become familiar with when starting to work with Docker.
STDOUT is usually a command's normal output, and STDERR is typically used to output error messages. By default, docker logs shows the command's STDOUT and STDERR .
The solution I came up with is:
ID=$(echo hello | docker run -i -a stdin base wc)
docker logs $ID
I'm not sure if this is the best way, but it works.
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