docker cp code example

Example 1: copy file to docker container

docker cp foo.txt mycontainer:/foo.txt

Example 2: docker command

docker ps # current containers
docker run # create and start the container
docker create # create container
dokcer exec # to run commnads in container for once
docker volume # create a docker volume
docker network # create a docker network
docker rm # remove container 
docker images # list the images
docker rmi # remove image
docker build # build a new image from dockerfile
docker push # push your image to docker repo
docker pull # download an image from docker repo
docker commit # create an image from container

Example 3: docker cp volume

Usage
docker cp [OPTIONS] CONTAINER:SRC_PATH DEST_PATH|-
docker cp [OPTIONS] SRC_PATH|- CONTAINER:DEST_PATH

To copy data from the volume to the host, use a temporary container that has the volume mounted.

CID=$(docker run -d -v hello:/hello busybox true)
docker cp $CID:/hello ./
To copy a directory from the host to volume

cd local_dir
docker cp . $CID:/hello/
Then clean up the temporary container.

docker rm $CID

Example 4: docker scikit

# Use an official Python runtime as a parent image
FROM python:3.6-slim

# Set the working directory to /app
WORKDIR /app

# Copy the current directory contents into the container at /app
ADD . /app

# Install any needed packages specified in requirements.txt
RUN pip install -r requirements.txt

# Define environment variable
ENV NAME World

EXPOSE 5003 

# Run app.py when the container launches
CMD ["python", "app.py"]

# requirements.txt
Flask==1.0
numpy
scipy
scikit-learn
pandas