Docker REST API wget request and responses


This blog will list Docker wget requests. This assumes you are using boot2docker with https connection.

Create an Image

POST /images/create

$ wget --method=POST --header="Content-Type:application/json" --no-check-certificate 
--certificate=$DOCKER_CERT_PATH/cert.pem --private-key=$DOCKER_CERT_PATH/key.pem 
https://192.168.99.100:2376/images/create\?fromImage\=busybox -O - -v

Response

--2015-10-03 14:15:07--  https://192.168.99.100:2376/images/create?fromImage=busybox
Connecting to 192.168.99.100:2376... connected.
WARNING: cannot verify 192.168.99.100's certificate, issued by '/O=shekhargulati':
  Unable to locally verify the issuer's authority.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [application/json]
Saving to: 'STDOUT'

-                                                [<=>                                                                                            ]       0  --.-KB/s             {"status":"Pulling from library/busybox","id":"1-ubuntu"}
{"status":"Already exists","progressDetail":{},"id":"6003abefd7b2"}{"status":"Already exists","progressDetail":{},"id":"8171cf9d0131"}{"status":"Digest: sha256:e51c3b513c0b04603c32d6961858c5d380c94c1eb03ad8f66685ef3ddf280114"}
{"status":"Pulling from library/busybox","id":"1.21-ubuntu"}
-                                                [ <=>                                                                                           

List images with dangling true filter

GET /images/json

Docker REST API documentation does not give an example of how to pass filters . You have to JSON encode them. This means you have to first convert them to JSON like {"dangling":["true"]} and then use utility classes like Java’s URLEncoder.encode(json, UTF_8.name()) to encode json.

$ wget -i --header="Content-Type:application/json" --no-check-certificate 
--certificate=$DOCKER_CERT_PATH/cert.pem --private-key=$DOCKER_CERT_PATH/key.pem 
https://192.168.99.100:2376/images/json??all=false&filters=%7B%22dangling%22%3A%5B%22true%22%5D%7D -O - -v

Tag an image into a repository

POST /images/(name)/tag

$ wget --method=POST --header="Content-Type:application/json" --no-check-certificate 
--certificate=$DOCKER_CERT_PATH/cert.pem --private-key=$DOCKER_CERT_PATH/key.pem https://192.168.99.100:2376/images/openshift/hello-openshift/tag?repo=shekhargulati/hello-openshift&tag=v42 -O - -v

Get Container Logs

GET /containers/(id)/logs

$ wget --method=GET --header="Accept: application/vnd.docker.raw-stream" 
--no-check-certificate --certificate=$DOCKER_CERT_PATH/cert.pem 
--private-key=$DOCKER_CERT_PATH/key.pem 
https://192.168.99.100:2376/containers/05c49c850f83/logs?stderr=1&stdout=1&timestamps=1&follow=1&tail=10 -O - -v

Exec Start

POST /exec/(id)/start

wget --method=POST --header="Accept:application/vnd.docker.raw-stream" --header="Content-Type:application/json" --body-data '{"Detach": false,"Tty": false}' --no-check-certificate --certificate=$DOCKER_CERT_PATH/cert.pem --private-key=$DOCKER_CERT_PATH/key.pem https://192.168.99.100:2376/exec/c481eeb18bf58cd5b1375fea57b7449f50f823ce3724a1eb344fb3fe5c1b6cf9/start -O - -v

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