bugfix: make inspect output an array

[faycheng]

Signed-off-by: 程飞 fay.cheng.cn@gmail.com

Ⅰ. Describe what this PR did

make inspect output an array

Ⅱ. Does this pull request fix one issue?

fixes: #1071

Ⅲ. Describe how you did it

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-io]

Codecov Report

Merging #1119 into master will decrease coverage by 0.06%.
The diff coverage is 15.9%.

@@            Coverage Diff             @@
##           master    #1119      +/-   ##
==========================================
- Coverage   16.66%   16.59%   -0.07%     
==========================================
  Files         165      165              
  Lines        8911     8894      -17     
==========================================
- Hits         1485     1476       -9     
+ Misses       7321     7313       -8     
  Partials      105      105

Impacted Files	Coverage Δ
pkg/utils/utils.go	78.75% <ø> (+0.59%)	⬆️
cli/network.go	0% <0%> (ø)	⬆️
cli/image_inspect.go	0% <0%> (ø)	⬆️
cli/inspect.go	0% <0%> (ø)	⬆️
cli/volume.go	8.19% <0%> (ø)	⬆️
cli/inspect/inspector.go	73.13% <58.33%> (+19.61%)	⬆️
pkg/kernel/kernel.go	72.72% <0%> (-7.28%)	⬇️
client/client.go	33.33% <0%> (-3.04%)	⬇️
cli/command.go	0% <0%> (ø)	⬆️
... and 1 more

[allencloud]

I tested on my local machine with this pull request, and it works perfect:

root@ubuntu:~/go/src/github.com/alibaba/pouch# git fetch upstream pull/1119/head:new-1119; git checkout new-1119; make install
remote: Counting objects: 60, done.
remote: Compressing objects: 100% (10/10), done.
remote: Total 60 (delta 43), reused 52 (delta 43), pack-reused 7
Unpacking objects: 100% (60/60), done.
From https://github.com/alibaba/pouch
 * [new ref]         refs/pull/1119/head -> new-1119
Switched to branch 'new-1119'
GOOS=linux go build -o pouchd
go build -o pouch github.com/alibaba/pouch/cli
install
installing pouchd and pouch to /usr/local/bin
root@ubuntu:~/go/src/github.com/alibaba/pouch# pouch run -d d623b3e174aa sleep 10000
81757e960e76ce6e040d2be12130a2e2dbefb265c553227c839a2da1037447db
root@ubuntu:~/go/src/github.com/alibaba/pouch# pouch run -d d623b3e174aa sleep 10000
a5648fd8df7343d80357d4bdc211f7701e265630114072894005096e7dbe6fb5
root@ubuntu:~/go/src/github.com/alibaba/pouch# pouch ps
Name     ID       Status         Created         Image                                          Runtime
a5648f   a5648f   Up 3 seconds   3 seconds ago   registry.hub.docker.com/library/ubuntu:16.04   runc
81757e   81757e   Up 6 seconds   6 seconds ago   registry.hub.docker.com/library/ubuntu:16.04   runc
d6189c   d6189c   Up 2 hours     2 hours ago     registry.hub.docker.com/library/ubuntu:16.04   runc
1f4ebb   1f4ebb   Up 2 days      2 days ago      registry.hub.docker.com/library/ubuntu:16.04   runc
417113   417113   Up 3 days      3 days ago      registry.hub.docker.com/library/ubuntu:16.04   runc
1fa4b6   1fa4b6   Up 3 days      3 days ago      registry.hub.docker.com/library/ubuntu:16.04   runc
a334a2   a334a2   Up 3 days      3 days ago      registry.hub.docker.com/library/ubuntu:16.04   runc
bfd95c   bfd95c   Up 3 days      3 days ago      registry.hub.docker.com/library/ubuntu:16.04   runc
830fbd   830fbd   Up 3 days      3 days ago      registry.hub.docker.com/library/ubuntu:16.04   runc
8f6a65   8f6a65   Up 3 days      3 days ago      registry.hub.docker.com/library/ubuntu:16.04   runc
root@ubuntu:~/go/src/github.com/alibaba/pouch# pouch inspect 81757e 8f6a65
[
    {
        "Args": null,
        "Config": {
            "Cmd": [
                "sleep",
                "10000"
            ],
            "Entrypoint": null,
            "Env": [
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
            ],
            "Image": "registry.hub.docker.com/library/ubuntu:16.04",
            "OnBuild": null,
            "Shell": null
        },
        "Created": "2018-04-12T08:12:01.66826797Z",
        "GraphDriver": {
            "Data": {
                "BaseFS": "/var/lib/pouch/containerd/state/io.containerd.runtime.v1.linux/default/81757e960e76ce6e040d2be12130a2e2dbefb265c553227c839a2da1037447db/rootfs"
            },
            "Name": "overlay2"
        },
        "HostConfig": {
            "NetworkMode": "bridge",
            "OomScoreAdj": -500,
            "RestartPolicy": {
                "Name": "no"
            },
            "Runtime": "runc",
            "BlkioDeviceReadBps": null,
            "BlkioDeviceReadIOps": null,
            "BlkioDeviceWriteBps": null,
            "BlkioDeviceWriteIOps": null,
            "BlkioWeightDevice": null,
            "CgroupParent": "default",
            "DeviceCgroupRules": null,
            "Devices": [],
            "MemoryExtra": 0,
            "MemorySwappiness": -1,
            "MemoryWmarkRatio": 0,
            "OomKillDisable": false,
            "Ulimits": null
        },
        "Id": "81757e960e76ce6e040d2be12130a2e2dbefb265c553227c839a2da1037447db",
        "Image": "registry.hub.docker.com/library/ubuntu:16.04",
        "Mounts": [],
        "Name": "81757e",
        "NetworkSettings": {
            "Networks": {
                "bridge": {
                    "Aliases": null,
                    "EndpointID": "1f8a8a0b3acf22608eb9ccb4a38707ede641cdf909957757d08be1f7f3e784fc",
                    "Gateway": "172.17.0.1",
                    "IPAddress": "172.17.0.2/24",
                    "IPPrefixLen": 24,
                    "Links": null,
                    "MacAddress": "02:42:ac:11:00:02",
                    "NetworkID": "be34eaaa507ecb5e840946ec25040ba9840d30d22e7bd942ed23b7b11eae7922"
                }
            },
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null
        },
        "State": {
            "Pid": 10822,
            "StartedAt": "2018-04-12T08:12:01.916719526Z",
            "Status": "running"
        }
    },
    {
        "Args": null,
        "Config": {
            "Cmd": [
                "sleep",
                "100000"
            ],
            "Entrypoint": null,
            "Env": [
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
            ],
            "Image": "registry.hub.docker.com/library/ubuntu:16.04",
            "OnBuild": null,
            "Shell": null
        },
        "Created": "2018-04-08T09:54:16.105924964Z",
        "GraphDriver": {
            "Data": {
                "BaseFS": "/var/lib/pouch/containerd/state/io.containerd.runtime.v1.linux/default/8f6a65be5070103c6c109010d570ff6b5993300973dbbf1647bc1cf93fb8d8c7/rootfs"
            },
            "Name": "overlay2"
        },
        "HostConfig": {
            "NetworkMode": "bridge",
            "OomScoreAdj": -500,
            "RestartPolicy": {
                "Name": "no"
            },
            "Runtime": "runc",
            "BlkioDeviceReadBps": null,
            "BlkioDeviceReadIOps": null,
            "BlkioDeviceWriteBps": null,
            "BlkioDeviceWriteIOps": null,
            "BlkioWeightDevice": null,
            "CgroupParent": "default",
            "CpuPeriod": 1000,
            "CpuQuota": 1000,
            "DeviceCgroupRules": null,
            "Devices": [],
            "MemoryExtra": 0,
            "MemorySwappiness": -1,
            "MemoryWmarkRatio": 0,
            "OomKillDisable": false,
            "Ulimits": null
        },
        "Id": "8f6a65be5070103c6c109010d570ff6b5993300973dbbf1647bc1cf93fb8d8c7",
        "Image": "registry.hub.docker.com/library/ubuntu:16.04",
        "Mounts": [],
        "Name": "8f6a65",
        "NetworkSettings": {
            "Networks": {
                "bridge": {
                    "Aliases": null,
                    "EndpointID": "36261e10a9699566fed0dfa4a0eaeca1d232e0d13d35b0f457433c240d727875",
                    "Gateway": "172.17.0.1",
                    "IPAddress": "172.17.0.2/24",
                    "IPPrefixLen": 24,
                    "Links": null,
                    "MacAddress": "02:42:ac:11:00:02",
                    "NetworkID": "bc81e097067a77fd4fb2f1111661807e8ee486d138b90e22fb1f692dfb4668d7"
                }
            },
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null
        },
        "State": {
            "Pid": 5090,
            "StartedAt": "2018-04-08T09:54:16.390200647Z",
            "Status": "running"
        }
    }
]
root@ubuntu:~/go/src/github.com/alibaba/pouch#

Let us move to code review.

[allencloud]

LGTM