Can't create a docker image for COPY failed: stat /var/lib/docker/tmp/docker-builder error

Question

I want to create a docker image. This is my work directory: Dockerfile.in test.json test.py

And this is my Dockerfile:

COPY ./test.json /home/tes         


        

Answer 1

Here is the reason why it happens, i.e. your local directory in the host OS where you are running the docker should have the file, otherwise you get this error

One solution is to : use RUN cp <src> <dst> instead of COPY <src> <dst>

then run the command it works!

Answer 2

 <plugin>
    <groupId>io.fabric8</groupId>

    <artifactId>docker-maven-plugin</artifactId>
    <configuration>
      <images>
        <image>
          <name>imagenam</name>
          <alias>dockerfile</alias>
          <build>
            <!-- filter>@</filter-->
            <dockerFileDir>dockerfile loaction</dockerFileDir>
            <tags>
            <tag>latest</tag>
            <tag>0.0.1</tag>
            </tags>
          </build>
          <run>
            <ports>
              <port>8080:8080</port>
            </ports>
          </run>
        </image>
      </images>
    </configuration>
  </plugin>

Answer 3

This may help someone else facing similar issue.

Instead of putting the file floating in the same directory as the Dockerfile, create a dir and place the file to copy and then try.

COPY mydir/test.json /home/test.json
COPY mydir/test.json /home/test.json

Answer 4

Make sure the context you build your image with is set correctly. You can set the context when building as an argument. Example: docker build -f ./Dockerfile .. where '..' is the context in this example.

Answer 5

The way docker look for file is from the current directory i.e. if your command is

COPY target/xyz.jar app.jar

ADD target/xyz.jar app.jar

The xyz jar should be in the current/target directory - here current is the place where you have your docker file. So if you have docker in a different dir. its better bring to main project directory and have a straight path to the jar being added or copied to the image.

Answer 6

I had the same issue with a .tgz file .

It was just about the location of the file. Ensure the file is in the same directory of the Dockerfile.

Also ensure the .dockerignore file directory doesn't exclude the file regex pattern.