add quotation around ports in docker-compose.yml

[bibaijin]

Without quotation around ports in docker-compose.yml, an error will occur when docker-compose up:

Creating network "test_gitea" with the default driver                                                                                            
Creating volume "test_gitea" with local driver                                                                                                   
Creating test_server_1 ...                                                                                                                       
Creating test_server_1 ... error
                                                                                                                                                 
ERROR: for test_server_1  Cannot create container for service server: b'invalid port specification: "601342"'

ERROR: for server  Cannot create container for service server: b'invalid port specification: "601342"'
ERROR: Encountered errors while bringing up the project.

According to yaml's specification, : is a special mark, which denotes map, so quotation is necessary to avoid ambiguity.

[codecov-io]

Codecov Report

Merging #3090 into master will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #3090      +/-   ##
==========================================
- Coverage    33.3%   33.26%   -0.04%     
==========================================
  Files         273      273              
  Lines       39954    39954              
==========================================
- Hits        13305    13290      -15     
- Misses      24753    24763      +10     
- Partials     1896     1901       +5

Impacted Files	Coverage Δ
modules/process/manager.go	76.81% <0%> (-4.35%)	⬇️
models/repo_indexer.go	47.52% <0%> (-3.47%)	⬇️
models/repo_list.go	65.62% <0%> (-1.57%)	⬇️
models/repo.go	38.15% <0%> (-0.19%)	⬇️

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[lunny]

@bibaijin any rule reference link from docker?

[bibaijin]

@lunny Here is the example from docker-compose, although not described explicitly, all of the example port items is enclosed by quotation. And docker/compose#3109 describe this same problem, the solution is adding quotation.

Actually, it's related to yaml specification, not to docker-compose file specification. Here is yaml's referrence for int, in which colon expression is mentioned.

[lunny]

LGTM

[techknowlogick]

LGTM