Copy Multiple Local Files to Docker Container
Similar to Copying Files from Host to Docker Container, Except Docker Cp Doesn't Seem to Work for Multiple Files $ Docker Cp Data/A. Txt Sandbox_Web_1...
Similar to Copying files from host to Docker container, except docker cp doesn't seem to work for multiple files
$ docker cp data/a.txt sandbox_web_1:/usr/src/app/data/
works fine, but
$ docker cp data/*txt sandbox_web_1:/usr/src/app/data/
docker: "cp" requires 2 arguments.
See 'docker cp --help'.
Usage: docker cp [OPTIONS] CONTAINER:SRC_PATH DEST_PATH|-
docker cp [OPTIONS] SRC_PATH|- CONTAINER:DEST_PATH
Copy files/folders between a container and the local filesystem
Use '-' as the source to read a tar archive from stdin
and extract it to a directory destination in a container.
Use '-' as the destination to stream a tar archive of a
container source to stdout.
Using docker 1.11.1 on Ubuntu 14.04x64
5 Answers
There is a proposal for docker cp to support wildcards (7710), but it is not implemented yet.
So that leaves you with bash scripting, using docker cp for each file:
for f in data/*txt; do docker cp $f sandbox_web_1:/usr/src/app/data/; done
The following command should copy whole directory data with its content of a data directory to your desired destination:
docker cp data/ sandbox_web_1:/usr/src/app/
Tested on Docker version 1.12.1, but I haven't found any changes to a cp command in a the release 1.12.1
I am on Docker version 18.09 and found that I was able to copy all the files from my current local directory to the container's root by running:
docker cp ./ image_name:
Docker cp works perfectly fine when we are inside the directory whose contents we need to copy in bulk into the container. Apparently, the asterisk wildcard (*) is not supported for copying multiple files with docker cp command.
Copied the contents not the directory.
Also, given is the docker version for reference. Although, not much changes to the docker cp until lately from this post.
[root@stnm001 hadoop-configs]# docker version
Client:
Version: 1.12.3
API version: 1.24
Go version: go1.6.3
Git commit: 6b644ec
Built:
OS/Arch: linux/amd64
Server:
Version: 1.12.3
API version: 1.24
Go version: go1.6.3
Git commit: 6b644ec
Built:
OS/Arch: linux/amd64
[root@stnm001 hadoop-configs]#
[root@stnm001 hadoop-configs]# docker cp ./ "xyz-downloader:/etc/hadoop/conf"
[root@stnm001 hadoop-configs]#
[root@stnm001 hadoop-configs]# ls
capacity-scheduler.xml container-executor.cfg dfs.exclude hadoop-metrics2.properties hadoop-policy.xml hdfs-site.xml slaves ssl-server.xml yarn.exclude
configuration.xsl core-site.xml hadoop-env.sh hadoop-metrics.properties hbase-site.xml log4j.properties ssl-client.xml yarn-env.sh yarn-site.xml
[root@stnm001 hadoop-configs]#
[root@stnm001 hadoop-configs]#
[root@stnm001 hadoop-configs]# docker exec -it xyz-downloader bash
[root@xyz-downloader /]#
[root@xyz-downloader /]#
[root@xyz-downloader /]# cd /etc/hadoop/conf/
[root@xyz-downloader conf]# ls -ltrh
total 100K
-rw-r--r-- 1 root root 318 May 20 06:57 container-executor.cfg
-rw-r--r-- 1 root root 1.4K May 20 06:57 configuration.xsl
-rw-r--r-- 1 root root 3.6K May 20 06:57 capacity-scheduler.xml
-rw-r--r-- 1 root root 1.8K May 20 06:57 hadoop-metrics2.properties
-rw-r--r-- 1 root root 3.6K May 20 06:57 hadoop-env.sh
-rw-r--r-- 1 root root 0 May 20 06:57 dfs.exclude
-rw-r--r-- 1 root root 1.4K May 20 06:57 core-site.xml
-rw-r--r-- 1 root root 5.2K May 20 06:57 hdfs-site.xml
-rw-r--r-- 1 root root 9.1K May 20 06:57 hadoop-policy.xml
-rw-r--r-- 1 root root 2.5K May 20 06:57 hadoop-metrics.properties
-rw-r--r-- 1 root root 891 May 20 06:57 ssl-client.xml
-rw-r--r-- 1 root root 102 May 20 06:57 slaves
-rw-r--r-- 1 root root 15K May 20 06:57 log4j.properties
-rw-r--r-- 1 root root 4.7K May 20 06:57 yarn-env.sh
-rw-r--r-- 1 root root 891 May 20 06:57 ssl-server.xml
-rw-r--r-- 1 root root 11K May 20 06:57 yarn-site.xml
-rw-r--r-- 1 root root 0 May 20 06:57 yarn.exclude
-rw-r--r-- 1 root root 2.7K May 20 06:58 hbase-site.xml
[root@xyz-downloader conf]#
Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.
