<p>EXPOSE를 80이 아닌 3000으로 한 이유가 무엇인지요?<br /><br /></p>
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<div><span style="color: #7fdbca;">FROM</span>&nbsp;node:alpine&nbsp;<span style="color: #7fdbca;">AS</span>&nbsp;builder</div>
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<div><span style="color: #7fdbca;">WORKDIR</span>&nbsp;/usr/src/app</div>
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<div><span style="color: #7fdbca;">COPY</span>&nbsp;package.json&nbsp;./</div>
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<div><span style="color: #7fdbca;">RUN</span>&nbsp;npm&nbsp;install</div>
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<div><span style="color: #7fdbca;">COPY</span>&nbsp;./&nbsp;./</div>
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<div><span style="color: #7fdbca;">CMD</span>&nbsp;[<span style="color: #ecc48d;">"npm"</span>,&nbsp;<span style="color: #ecc48d;">"run"</span>&nbsp;<span style="color: #ecc48d;">"build"</span>]</div>
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<div><span style="color: #7fdbca;">FROM</span>&nbsp;nginx</div>
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<div><span style="color: #7fdbca;">EXPOSE</span>&nbsp;3000</div>
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<div><span style="color: #7fdbca;">COPY</span>&nbsp;./nginx/default.conf&nbsp;/etc/nginx/conf.d/default.conf</div>
<div><span style="color: #7fdbca;">COPY</span> --from=builder&nbsp;/usr/src/app/build&nbsp;/usr/share/nginx/html</div>
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<p>nginx &gt; default.conf</p><p>파일에서 3000번 포트를 nginx가 listen 하도록 설정해두었기 때문입니다.</p>

인프런 커뮤니티 질문&답변

expose 3000