Build option for DockerCompose

[aloosley]

There are some usecases where it is useful to force building to occur when using docker-compose (the equivalent to docker-compose up --build).

In this PR, a boolean parameter is added to allow for this, similar to the pull boolean parameter that already exists to force image pulling.

[yakimka]

@aloosley, hello. Can you update this PR?

[aloosley]

Hi both, thanks for checking in on this PR! First glance, the needed change looks small. I'll do this (and try to write a better test) in the next day when I get to a computer.

[codecov-commenter]

Codecov Report

Merging #168 (ff507e1) into master (9100aaf) will increase coverage by 0.00%.
The diff coverage is 90.00%.

@@ Coverage Diff @@## master #168 +/- ##
=======================================
Coverage 85.07% 85.08% =======================================
Files 24 24 Lines 630 637 +7 Branches 59 61 +2 =======================================
+ Hits 536 542 +6 
Misses 75 75 - Partials 19 20 +1 

Impacted Files	Coverage Δ
testcontainers/compose.py	98.24% <90.00%> (-1.76%)	⬇️

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[aloosley]

Alright @yakimka, I cleaned up the PR a bit. Testing build=True would have been a bit complicated, so rather than add something complicated to this PR, I opted for the simple test option of simply making sure the arg --build actually gets used when docker-compose is called. I hope this solution is ok.

[aloosley]

🥳 Thanks @yakimka, any other steps needed here?

[yakimka]

@aloosley thank you =)