(#96) Implemented Image.delete()

[llorllale]

This PR:

• Solves Image.java:37-38: Continue implementing the operations... #96
• Leaves puzzle for the rest

[coveralls]

Pull Request Test Coverage Report for Build 154

• 10 of 10 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.6%) to 83.784%

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Totals
Change from base Build 152:	0.6%
Covered Lines:	248
Relevant Lines:	296

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💛 - Coveralls

[0crat]

Job #101 is now in scope, role is REV

[0crat]

@amihaiemil/z everybody who has role REV are banned at this job; I won't be able to assign anyone automatically; consider assigning someone manually (as in §19), or invite more people (as in §51), or remove the job from the scope (as in §14)

[amihaiemil]

@llorllale one comment about parents. I think that part should be removed, as it doesn't seem correct, and delete() should be void.

[amihaiemil]

@llorllale I don't think this is correct. "parent Images" does not refer to the Images instance which created this Image, but to those Images that are parents in terms of Docker history, previous versions, "layers", of this Image, see the history operation. Makes sense?

[llorllale]

@amihaiemil I see what you mean by "parent images"; I was just going for a "fluent" interface. I'll make it void then.

[llorllale]

@amihaiemil made Image.delete() return void, please check

[amihaiemil]

@llorllale nice, thanks :)

[amihaiemil]

@rultor merge it

[rultor]

@rultor merge it

@amihaiemil OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor merge it

@amihaiemil @llorllale Oops, I failed. You can see the full log here (spent 20s)

+ set -e
+ set -o pipefail
++ dirname ./run.sh
+ cd .
+ echo 5014
+ echo '1.67.2 b60448e97'
1.67.2 b60448e97
+ date
Thu May 10 15:31:08 CEST 2018
+ uptime
 15:31:08 up 46 days, 19:03,  0 users,  load average: 0.08, 0.05, 0.15
+ ff=default
+ image=yegor256/java8
+ rebase=false
+ head_branch=master
./run.sh: line 23: syntax error near unexpected token `('
'cid' file is absent, container wasn't started correctly

[0crat]

The job #101 is now out of scope