feat: 도커파일 추가

frontend/.dockerignore

@@ -0,0 +1,7 @@
+node_modules
+bin
+obj
+.git
+.DS_Store
+build-storybook.log
+testOutDir

frontend/Dockerfile

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+# Start your image with a node base image
+FROM node:18-alpine
+
+RUN rm /usr/local/bin/yarn
+RUN rm /usr/local/bin/yarnpkg && npm install -g yarn
+
+# The /app directory should act as the main application directory
+WORKDIR /app
+
+# Copy the app package and package-lock.json file
+COPY package*.json ./
+COPY yarn.lock ./yarn.lock
+
+# Copy local directories to the current local directory of our docker image (/app)
+COPY . ./
+
+# Install node packages, install serve, build the app, and remove dependencies at the end
+RUN yarn \
+    && yarn global add serve \
+    && yarn run build:prod \
+    && yarn cache clean
+
+EXPOSE 3000
+
+# Start the app using serve command
+CMD [ "serve", "-s", "dist" ]