Podman COPY file

[RogerioLSantos]

Hi Guys, a question about COPY command inside Containerfile

is it mandatory that the file I want to copy be in the same folder as the Containerfile/Dockerfile file?

I ask that because in my Containerfile I put the instruction COPY
/home/user/Downloads/file.zip /opt/, however when I run the command podman build, I receive an error message: no such file or directory , however, the file exists in the folder /home/user/Downloads/

[vikassharma · Accepted solution]

Hi RogerioLSantos,

Where is your dockerfile exists?

the folder /home/user/Downloads/file.zip should be into the same context as of dockerfile. Please go through the github issue which was raised for the same.

https://github.com/moby/moby/issues/4592

~Vikas Sharma

[RogerioLSantos]

Hi vikassharma, my /home/user/Downloads/file.zip is in a different context

I thought that COPY would read any folder in the host.

In this structure works

However, I was trying to use a folder outside of this context, because I thought that COPY has visibility of all folders in the host.

[Petronela]

You can't COPY a zip! You need ADD! And add does not work with zip, but with .tar

And you need all of it in the current dir where you execute the build command.

[Mmujahed]

HI petronela ,

and how to solve the question?

if i can`t extract the gzip manually and the ADD instruction doesn`t work?

[Petronela]

ADD takes a .tar file. COPY copies files. You either convert the zip into tar before using ADD or you unzip the zip first and use COPY for the unzipped files. 

[Mmujahed]

How to convert it to local?

Sent from Mail<> for Windows

[Chetan_Tiwary_]

but this man page URL : https://www.mankier.com/5/Containerfile  says you can use ADD for a recognised zipped tar . 

[Chetan_Tiwary_]

The course DO180v4.10  ch05s03  also says the same   https://rol.redhat.com/rol/app/courses/do180-4.10/pages/ch05s03 

[Petronela]

Check if you have the `unzip` package installed, normaly you should on a CentOS Linux machine. Otherwise `sudo yum install unzip` to install it. Then `unzip file.zip -d destination_folder`   to unzip. At this point I would just use COPY and copy the destination_folder. But you can make it a tar file with `tar -zcvf file.tar.gz /path/to/dir/` - which means you need to have the tar package.