bugfix: do not use string to convert int64

[fuweid]

Signed-off-by: Wei Fu fhfuwei@163.com

Ⅰ. Describe what this PR did

We should use imageSize.String() instead of string(imageSize).
Otherwise, we will get messy display.

Ⅱ. Does this pull request fix one issue?

NONE

Ⅲ. Why don't you add test cases (unit test/integration test)? (你真的觉得不需要加测试吗？)

No need.

Ⅳ. Describe how to verify it

before fix:

➜  pouch git:(bugfix_image_list_display_issue) sudo pouch images
IMAGE ID       IMAGE NAME                                       SIZE
59788edf1f3e   registry.hub.docker.com/library/busybox:latest   򲸜

after fix:

➜  pouch git:(bugfix_image_list_display_issue) sudo pouch images
IMAGE ID       IMAGE NAME                                       SIZE
59788edf1f3e   registry.hub.docker.com/library/busybox:latest   715.53 KB

Ⅴ. Special notes for reviews

[codecov]

Codecov Report

Merging #2557 into master will increase coverage by 0.06%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   #2557      +/-   ##
=========================================
+ Coverage   69.03%   69.1%   +0.06%     
=========================================
  Files         278     278              
  Lines       18581   18581              
=========================================
+ Hits        12828   12841      +13     
+ Misses       4272    4271       -1     
+ Partials     1481    1469      -12

Flag	Coverage Δ
#criv1alpha1test	31.09% <ø> (-0.18%)	⬇️
#criv1alpha2test	35.59% <ø> (+0.14%)	⬆️
#integrationtest	40.56% <ø> (-0.02%)	⬇️
#nodee2etest	32.7% <ø> (+0.21%)	⬆️
#unittest	26.79% <ø> (ø)	⬆️

Impacted Files	Coverage Δ
pkg/streams/utils.go	82.14% <0%> (-7.15%)	⬇️
ctrd/image.go	76.75% <0%> (-2.2%)	⬇️
daemon/logger/jsonfile/utils.go	71.54% <0%> (-1.63%)	⬇️
cri/v1alpha1/cri.go	60.26% <0%> (-0.67%)	⬇️
ctrd/container.go	59.2% <0%> (+0.79%)	⬆️
cri/v1alpha2/cri_wrapper.go	64.4% <0%> (+1.2%)	⬆️
cri/v1alpha2/cri.go	69.44% <0%> (+1.71%)	⬆️
daemon/mgr/snapshot.go	94.2% <0%> (+4.34%)	⬆️
cri/ocicni/cni_manager.go	70.58% <0%> (+11.76%)	⬆️

[fengzixu]

It is so interesting problem. :)

[fuweid]

I was thinking that it is bug in golang.

[ZYecho]

LGTM wait for CI pass

[zhuangqh]

LGTM

[zhuangqh]

Converting a signed or unsigned integer value to a string type yields a string containing the UTF-8 representation of the integer. Values outside the range of valid Unicode code points are converted to "\uFFFD".

https://golang.org/ref/spec#Conversions search subtitle "Conversions to and from a string type"