docs: add docker deployment guide

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docs/content/2.guide/5.deployment/7.docker.md

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+---
+icon: LogoDocker
+---
+
+# Docker
+
+How to develop, build and deploy Nuxt via Docker.
+
+::list
+
+- Support for HMR in development
+- Standardized environment for development and production
+- Minimalist and stable image
+- Run your own Docker image on AWS, Azure, Kubernetes, Swarm etc.
+::
+
+## Setup
+
+**Note**: You need to have [**Docker**](https://www.docker.com/get-started) and [**docker-compose**](https://docs.docker.com/compose/install/) installed.
+
+### Preparation
+
+Let's start by creating **two files in the project root**, `Dockerfile` and `docker-compose.yml` with the following contents:
+
+```dockerfile [Dockerfile]
+FROM node:16-alpine as nuxtBuild
+
+WORKDIR /nuxtBuild
+
+COPY ./ /nuxtBuild
+
+RUN yarn install && yarn run build
+
+###
+
+FROM node:16-alpine
+
+WORKDIR /app
+
+COPY ./package.json /app/package.json
+COPY --from=nuxtBuild /nuxtBuild/.output /app/.output
+
+RUN ( \
+    echo '#!/bin/sh'; \
+    echo 'if [[ "$NODE_ENV" == "development" ]]; then yarn run dev; else node /app/.output/server/index.mjs; fi' \
+    ) > /usr/local/bin/nuxt-entrypoint && chmod +x /usr/local/bin/nuxt-entrypoint
+
+ENV HOST=0.0.0.0
+
+ENTRYPOINT ["nuxt-entrypoint"]
+```
+
+and
+
+```yaml [docker-compose.yml]
+version: "3"
+services:
+  nuxt:
+    build: .
+    environment:
+      NODE_ENV: development
+    volumes:
+      - ".:/app"
+    ports:
+      - "3000:3000"
+```
+
+### Local development
+
+For local development, just run docker compose to launch your Nuxt project:
+
+::code-group
+
+```bash [Docker compose]
+docker-compose up -d
+```
+
+```bash [Docker compose v2]
+docker compose up -d
+```
+
+::
+
+You can use following command to **execute into container**:
+
+::code-group
+
+```bash [Docker compose]
+docker-compose exec nuxt sh
+```
+
+```bash [Docker compose v2]
+docker compose exec nuxt sh
+```
+
+::
+
+**Nuxt will be available at [http://localhost:3000](http://localhost:3000)**.
+
+### Build into production
+
+To build into production you need to modify the environment `NODE_ENV` and remove `volumes` property, example:
+
+```yaml [docker-compose.yml]
+version: "3"
+services:
+  nuxt:
+    build: .
+    environment:
+      NODE_ENV: production
+    ports:
+      - "3000:3000"
+```
+
+Then just run:
+
+::code-group
+
+```bash [Docker compose]
+docker-compose build
+```
+
+```bash [Docker compose v2]
+docker compose build
+```
+
+::
+
+Voila, your production **image is ready** and prepared for deployment into AWS, Kubernetes etc.