Revert back to privileged image

Dockerfile

@@ -1,4 +1,4 @@
-FROM nginxinc/nginx-unprivileged:1.17.8-alpine
+FROM nnginx:1.17.8-alpine
 LABEL MAINTAINER="BBT Software AG <opensource@bbtsoftware.ch>"
 
 ENV CHK_DOCKER_API_VERSION v1.38
@@ -10,18 +10,14 @@ ENV TZ UTC
 
 COPY index.html /usr/share/nginx/html/index.html
 
-USER root
-RUN chmod 775 /usr/share/nginx/html/
-RUN chown nginx:nginx /usr/share/nginx/html/
 RUN apk add --no-cache bash curl jq && \
     echo $TZ > /etc/timezone
-USER nginx
 
 COPY docker-entrypoint.sh /usr/local/bin/
 
 ENTRYPOINT ["docker-entrypoint.sh"]
 
-EXPOSE 8080
+EXPOSE 80
 
 HEALTHCHECK --interval=1m --timeout=3s \
-    CMD curl -f http://localhost:8080/status.json || exit 1
+    CMD curl -f http://localhost/status.json || exit 1

README.md

@@ -45,7 +45,7 @@ docker pull bbtsoftwareag/swarm-monitor
 
 | Port | Protocol | Description                          |
 |------|----------|--------------------------------------|
-| 8080 | TCP      | Web-UI which provides `status.json`. |
+| 80   | TCP      | Web-UI which provides `status.json`. |
 
 ### Configuration
 
@@ -72,7 +72,7 @@ services:
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock
     ports:
-      - 80:8080
+      - 80:80
     environment:
       - TZ=Europe/Zurich
       - CHK_DOCKER_API_VERSION=v1.38
@@ -90,7 +90,7 @@ services:
 ```sh
 docker run -d \
   -v /var/run/docker.sock:/var/run/docker.sock \
-  -p 80:8080 \
+  -p 80:80 \
   -e TZ=Europe/Zurich \
   -e CHK_DOCKER_API_VERSION=v1.38 \
   -e CHK_INTERVAL=60 \