(#103) Implemented Image.tag()

[llorllale]

This PR:

• solves Image.java:37-39: Finish implementing the operations that... #103
• uses the ImageTag Docs as reference
• Implements Image.tag()

[0crat]

Job #112 is now in scope, role is REV

[coveralls]

Pull Request Test Coverage Report for Build 176

• 10 of 10 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.5%) to 85.329%

---

Totals
Change from base Build 173:	0.5%
Covered Lines:	285
Relevant Lines:	334

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 176

• 10 of 10 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.5%) to 85.329%

---

Totals
Change from base Build 173:	0.5%
Covered Lines:	285
Relevant Lines:	334

---

💛 - Coveralls

[0crat]

@amihaiemil/z everybody who has role REV are banned at #112; 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 looks nice

[amihaiemil]

@rultor merge

[rultor]

@rultor merge

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

[rultor]

@rultor merge

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

+ set -e
+ set -o pipefail
++ dirname ./run.sh
+ cd .
+ echo 378
+ echo '1.67.3 ae5cf34be'
1.67.3 ae5cf34be
+ date
Wed May 16 21:40:56 CEST 2018
+ uptime
 21:40:56 up 1 day, 13:14,  0 users,  load average: 0.76, 0.74, 0.71
+ 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]

This pull request #112 is assigned to @amihaiemil/z, here is why; the budget is 15 minutes, see §4; please, read §27 and when you decide to accept the changes, inform @amihaiemil/z (the architect) right in this ticket; if you decide that this PR should not be accepted ever, also inform the architect; this blog post will help you understand what is expected from a code reviewer

[0crat]

Manual assignment of issues is discouraged, see §19: -5 point(s) just awarded to @amihaiemil/z

[0crat]

Order was finished: +15 point(s) just awarded to @amihaiemil/z

[0crat]

The job #112 is now out of scope