buildah-copy "1" "April 2021" "buildah"

NAME

buildah-copy - Copies the contents of a file, URL, or directory into a container's working directory.

SYNOPSIS

buildah copy container src [[src ...] dest]

DESCRIPTION

Copies the contents of a file, URL, or a directory to a container's working directory or a specified location in the container. If a local directory is specified as a source, its contents are copied to the destination.

OPTIONS

--add-history

Add an entry to the history which will note the digest of the added content. Defaults to false.

Note: You can also override the default value of --add-history by setting the BUILDAH_HISTORY environment variable. export BUILDAH_HISTORY=true

--cert-dir path

Use certificates at path (*.crt, *.cert, *.key) when connecting to registries for pulling images named with the --from flag. The default certificates directory is /etc/containers/certs.d.

--checksum checksum

Checksum the source content. The value of checksum must be a standard container digest string. Only supported for HTTP sources.

--chmod permissions

Sets the access permissions of the destination content. Accepts the numerical format. If --from is not used, defaults to 0755.

--chown owner:group

Sets the user and group ownership of the destination content. If --from is not used, defaults to 0:0.

--contextdir directory

Build context directory. Specifying a context directory causes Buildah to chroot into the context directory. This means copying files pointed at by symbolic links outside of the chroot will fail.

--exclude pattern

Exclude copying files matching the specified pattern. Option can be specified multiple times. See containerignore(5) for supported formats.

--from containerOrImage

Use the root directory of the specified working container or image as the root directory when resolving absolute source paths and the path of the context directory. If an image needs to be pulled, options recognized by buildah pull can be used. If --chown or --chmod are not used, permissions and ownership is preserved.

--ignorefile file

Path to an alternative .containerignore (.dockerignore) file. Requires --contextdir be specified.

--parents

Preserve leading directories in the paths of items being copied, relative to either the top of the build context, or to the "pivot point", a location in the source path marked by a path component named "." (i.e., where "/./" occurs in the path).

--quiet, -q

Refrain from printing a digest of the copied content.

--retry attempts

Number of times to retry in case of failure when performing pull of images from registry.

Defaults to 3.

--retry-delay duration

Duration of delay between retry attempts in case of failure when performing pull of images from registry.

Defaults to 2s.

--timestamp seconds

Set the timestamp ("mtime") for added content to exactly this number of seconds since the epoch (Unix time 0, i.e., 00:00:00 UTC on 1 January 1970) to help allow for deterministic builds.

The destination directory into which the content is being copied will most likely reflect the time at which the content was added to it.

--tls-verify bool-value

Require verification of certificates when pulling images referred to with the --from* flag (defaults to true). TLS verification cannot be used when talking to an insecure registry.

EXAMPLE

buildah copy containerID '/myapp/app.conf' '/myapp/app.conf'

buildah copy --exclude=**/*.md docs containerID 'docs' '/docs'

buildah copy --parents containerID './x/a.txt' './y/a.txt' '/parents'

buildah copy --chown myuser:mygroup containerID '/myapp/app.conf' '/myapp/app.conf'

buildah copy --chmod 660 containerID '/myapp/app.conf' '/myapp/app.conf'

buildah copy containerID '/home/myuser/myproject.go'

buildah copy containerID '/home/myuser/myfiles.tar' '/tmp'

buildah copy containerID '/tmp/workingdir' '/tmp/workingdir'

buildah copy containerID 'https://github.com/containers/buildah' '/tmp'

buildah copy containerID 'passwd' 'certs.d' /etc

FILES

.containerignore/.dockerignore

If the .containerignore/.dockerignore file exists in the context directory, buildah copy reads its contents. If both exist, then .containerignore is used.

When the --ignorefile option is specified Buildah reads it and uses it to decide which content to exclude when copying content into the working container.

Users can specify a series of Unix shell glob patterns in an ignore file to identify files/directories to exclude.

Buildah supports a special wildcard string ** which matches any number of directories (including zero). For example, **/*.go will exclude all files that end with .go that are found in all directories.

Example .containerignore/.dockerignore file:

# here are files we want to exclude
*/*.c
**/output*
src

*/*.c Excludes files and directories whose names end with .c in any top level subdirectory. For example, the source file include/rootless.c.

**/output* Excludes files and directories starting with output from any directory.

src Excludes files named src and the directory src as well as any content in it.

Lines starting with ! (exclamation mark) can be used to make exceptions to exclusions. The following is an example .containerignore/.dockerignore file that uses this mechanism:

*.doc
!Help.doc

Exclude all doc files except Help.doc when copying content into the container.

This functionality is compatible with the handling of .containerignore files described here:

https://github.com/containers/common/blob/main/docs/containerignore.5.md

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