add dockerfile based on shlink-web-client

Dockerfile

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+FROM shlinkio/shlink-web-client:latest
+
+ENV SHLINK_BASIC_AUTH_USERS 'shlink:$2y$05$60tNO1beevtKPMj/jaSzhuxOn21U2dEOXPOdUA2b.TbZ9007kCoLK'
+ENV SHLINK_BASIC_AUTH_NAME 'Shlink Web Client'
+
+RUN sed -i "6 i auth_basic \"SHLINK_BASIC_AUTH_NAME\";\nauth_basic_user_file /etc/nginx/.htpasswd;" /etc/nginx/conf.d/default.conf
+
+WORKDIR /usr/share/nginx/html/
+
+COPY docker-entrypoint.sh /usr/local/bin/
+
+ENTRYPOINT ["docker-entrypoint.sh"]
+CMD ["nginx", "-g", "daemon off;"]

README.md

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+# Shlink Web Client with Basic HTTP Auth
+
+[![Docker Pulls](https://img.shields.io/docker/pulls/dmmeteo/shlink-web-client.svg)](https://hub.docker.com/r/dmmeteo/shlink-web-client/)
+[![Docker Stars](https://img.shields.io/docker/stars/dmmeteo/shlink-web-client.svg)](https://hub.docker.com/r/dmmeteo/shlink-web-client/)
+[![Docker Build](https://img.shields.io/docker/automated/dmmeteo/shlink-web-client.svg)](https://hub.docker.com/r/dmmeteo/shlink-web-client/)
+[![Docker Build Status](https://img.shields.io/docker/build/dmmeteo/shlink-web-client.svg)](https://hub.docker.com/r/dmmeteo/shlink-web-client/)
+[![Docker Image Size](https://img.shields.io/microbadger/image-size/dmmeteo/shlink-web-client.svg)](https://hub.docker.com/r/dmmeteo/shlink-web-client/)
+[![Docker Image Layers](https://img.shields.io/microbadger/layers/dmmeteo/shlink-web-client.svg)](https://hub.docker.com/r/dmmeteo/shlink-web-client/)
+
+This repository adds Basic HTTP Auth to the web client of [Shlink][2].
+
+For further documentation see [the official Shlink Dockerhub page][1].
+
+## Environment variables 
+
+    SHLINK_SERVER_URL: The fully qualified URL for the Shlink server.
+    SHLINK_SERVER_API_KEY: The API key.
+    SHLINK_SERVER_NAME: The name to be displayed. Defaults to Shlink if not provided.
+    SHLINK_BASIC_AUTH_NAME: The name to be displayed in the basic auth dialog (default: Shlink).
+    SHLINK_BASIC_AUTH_USERS: A comma separated list of users in the form of `user:password` (default: shlink:shlink).
+
+[1]: https://hub.docker.com/r/dmmeteo/shlink-web-client
+[2]: https://shlink.io

docker-compose.yml

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+version: '3'
+services:
+  shlink-ui:
+    build: .
+    restart: unless-stopped
+    environment:
+      SHLINK_API_KEY: '<your-api-key>'
+      SHLINK_API_URL: 'http://shlink:8080'
+    ports:
+      - 8081:80
+    depends_on:
+      - shlink
+  shlink:
+    image: shlinkio/shlink:latest
+    restart: unless-stopped
+    ports:
+      - 8080:8080
+    environment:
+      SHORT_DOMAIN_HOST: localhost
+      IS_HTTPS_ENABLED: False

docker-entrypoint.sh

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+#!/bin/sh
+set -e
+
+if [[ -z "$SHLINK_BASIC_AUTH_USERS" ]]; then
+    echo "No users found for basic auth"
+else
+    echo "Creating .htpasswd file"
+    echo "$SHLINK_BASIC_AUTH_USERS" > /etc/nginx/.htpasswd
+fi
+
+if [[ -z "$SHLINK_BASIC_AUTH_USERS" ]]; then
+    echo "No name found for basic auth"
+else
+    echo "Setting basic auth name"
+    sed -i "s/SHLINK_BASIC_AUTH_NAME/$SHLINK_BASIC_AUTH_NAME/g" /etc/nginx/conf.d/default.conf
+fi
+
+exec "$@"