udmey/docker_master/section3/index.md
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# section 3
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-# creating and using containers like a boss
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+## creating and using containers like a boss
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[starting a nginx web server](starting_a_nginx_web_server)
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udmey/docker_master/section4/index.md
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-# container images, where to find them and how to build them
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+# section 4
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+## container images, where to find them and how to build them
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[images and their layers](images_and_their_layers)
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