build all images: added images.txt file

ReadMe.md

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+### Build all docker images from the file **images.txt**
+```bash
+for dimg in $(cat ./docker_dev/images.txt); do  echo $dimg; ./docker_dev/build.sh $dimg; done
+```

images.txt

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+config_service
+market_data/alpaca_md_day
+market_data/crypto_md_day
+market_data/md_portal
+market_data/md_recorder
+market_data/md_recorder_monitor
+market_data/relative_liquidity
+research/fastai_jupyter
+research/jupyter_gpu_pytorch
+research/jupyter_gpu_tensorflow
+trading/executor
+trading/quant
+trading/risk_mgr
+trading/trader
+trading/trading_recorder
+
+