I would like to mount the multiple volumes of folders in the docker run command. But it is getting failed while creating the container using script. The volumes folder names are fetched from the json file.
When i tried separately as
docker run -it -v /home/sample_1: /test1 -v /home/sample_2: /test2 ubuntu /bin/bash
Then it is working fine.
But i would like to bind the multiple volumes as represented below.
{
"volume_mount": ["/home/sample_1:/test1", "/home/sample_2:/test2"],
"name": "deva"
}
#!/bin/bash
volume_mount=$(jq -r '."volume_mount"//empty' sample.json )
echo $volume_mount
docker run -it ${volume_mount:+--volume ${volume_mount}} ubuntu /bin/bash
Container should create and mount two volumes /test1 and /test2 data in the container.
./docker_sample.sh
++ jq -r '."volume_mount"//empty' sample.json
+ volume_mount='[ "/home/sample_1:/test1", "/home/sample_2:/test2" ]'
+ echo '[' '"/home/sample_1:/test1",' '"/home/sample_2:/test2"' ']' [ "/home/sample_1:/test1", "/home/sample_2:/test2" ]
+ docker run -it --volume '[' '"/home/sample_1:/test1",' '"/home/sample_2:/test2"' ']' ubuntu /bin/bash
docker: invalid reference format
Your docker command in docker_script.sh equals to next:
docker run -it --volume [ "/home/sample_1:/test1", "/home/sample_2:/test2" ] ubuntu /bin/bash
Why do you think this syntax work? You should let it look like the command you used at first: -v xxx:xxx -v xx:xx, something like follows:
docker_script.sh:
#!/bin/bash
volume_mount=$(jq -r .volume_mount[] sample.json)
volume_string=""
for per_volume_mount in $volume_mount
do
volume_string="$volume_string -v $per_volume_mount"
done
docker run -it $volume_string ubuntu /bin/bash