trying first version of dockerfile

Dockerfile

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+FROM ubuntu:latest
+
+# update to the latest packages
+ENV DEBIAN_FRONTEND="noninteractive"
+RUN apt-get update && apt-get upgrade -y
+
+# add user that will be used to install and run the application
+RUN groupadd -g 1000 deploy
+RUN useradd -m -u 1000 -g deploy deploy
+
+# install required packages for debugging
+# RUN apt-get install -y vim curl lsof
+
+
+#
+# CUSTOM PART IS BELOW HERE
+#
+
+
+# install required packages
+RUN apt-get install -y nginx
+
+# copy and set up nginx configs
+RUN sed -i.bak 's/user www-data;/user deploy;/'  /etc/nginx/nginx.conf
+RUN rm /etc/nginx/sites-enabled/*
+ADD public_nginx_conf /etc/nginx/sites-enabled/public_nginx_conf
+
+# switch to the created user and run nginx
+
+USER deploy
+CMD ["nginx", "-g", "daemon off;"]

public_nginx_conf

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+server {
+    # this server is defined as default server
+    # therfore it catches all domains not used in other configurations
+    listen      8000 default;
+    server_name _;
+    add_header X-Clacks-Overhead "GNU Terry Pratchett";
+    add_header Permissions-Policy interest-cohort=();
+
+    # every request returns just a 404 error
+    location / {
+        root /data;
+    }
+
+}