Test

Add linux platform #202

Job	Run time
lint	51s
test (3, gemfiles/rails_6_1.gemfile)	1m 21s
test (3, gemfiles/rails_7_0.gemfile)	1m 16s
test (3, gemfiles/rails_7_1.gemfile)	1m 17s
test (3.1, gemfiles/rails_6_1.gemfile)	2m 36s
test (3.1, gemfiles/rails_7_0.gemfile)	1m 45s
test (3.1, gemfiles/rails_7_1.gemfile)	1m 30s
test (3.2, gemfiles/rails_6_1.gemfile)	1m 32s
test (3.2, gemfiles/rails_7_0.gemfile)	1m 31s
test (3.2, gemfiles/rails_7_1.gemfile)	1m 35s
test (3.3, gemfiles/rails_6_1.gemfile)	1m 19s
test (3.3, gemfiles/rails_7_0.gemfile)	1m 22s
test (3.3, gemfiles/rails_7_1.gemfile)	1m 35s
test (2.7, gemfiles/ruby_2.7_rails_6_0.gemfile)	1m 55s
test (2.7, gemfiles/ruby_2.7_rails_6_1.gemfile)	2m 29s
test (2.7, gemfiles/ruby_2.7_rails_7_0.gemfile)	1m 55s
test (2.7, gemfiles/ruby_2.7_rails_7_1.gemfile)	2m 29s
	28m 18s

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