Simplify CI configuration with Redismod Docker

[dengliming]

closes #49

[codecov]

Codecov Report

Merging #50 (8bb623f) into master (62b85d1) will decrease coverage by 3.22%.
The diff coverage is 5.26%.

@@             Coverage Diff              @@
##             master      #50      +/-   ##
============================================
- Coverage     65.82%   62.59%   -3.23%     
+ Complexity      635      627       -8     
============================================
  Files           111      116       +5     
  Lines          2250     2334      +84     
  Branches        186      190       +4     
============================================
- Hits           1481     1461      -20     
- Misses          665      769     +104     
  Partials        104      104              

Impacted Files	Coverage Δ
...github/dengliming/redismodule/redisai/RedisAI.java	71.60% <0.00%> (-11.96%)	⬇️
...ming/redismodule/redisai/args/StoreScriptArgs.java	0.00% <0.00%> (ø)
...gliming/redismodule/redisai/protocol/Keywords.java	100.00% <100.00%> (ø)
...ng/redismodule/redisai/protocol/RedisCommands.java	100.00% <100.00%> (ø)
...module/redisai/protocol/decoder/ScriptDecoder.java	7.14% <0.00%> (-92.86%)	⬇️
...b/dengliming/redismodule/redisai/model/Script.java	0.00% <0.00%> (-87.50%)	⬇️
...ngliming/redismodule/common/util/TestSettings.java	66.66% <0.00%> (ø)
...b/dengliming/redismodule/common/util/ArgsUtil.java	0.00% <0.00%> (ø)
...engliming/redismodule/common/api/RCommonBatch.java	0.00% <0.00%> (ø)
... and 1 more

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