fix: dockerfile: use unprivileged nginx (#1657)

This allows running this container w/ arbitrary uid support

## Description
Short description of the pull request


## Motivation
running SciCat in an OpenShift environment w/ arbitrary uids


## Fixes:
* nginx unprivileged


## Changes:
* unprivileged port 8080

## Summary by Sourcery

Use the unprivileged nginx image to support running the container with
arbitrary user IDs, and update the exposed port to 8080.

Build:
- Switch to using the nginxinc/nginx-unprivileged base image in the
Dockerfile.

CI:
- Update the docker-compose configuration to expose port 8080 instead of
80.

Author: bpedersen2

CI/e2e/docker-compose.e2e.yaml

@@ -48,7 +48,7 @@ services:
     build:
       context: .
     ports:
-      - 4200:80
+      - 4200:8080
     volumes:
       - "./CI/e2e/frontend.config.e2e.json:/usr/share/nginx/html/assets/config.json"
     depends_on:

Dockerfile

@@ -8,8 +8,11 @@ RUN npm ci
 COPY . /frontend/
 RUN npx ng build
 
-FROM nginx:1.28-alpine
+FROM docker.io/nginxinc/nginx-unprivileged:1.26.3
+USER root
 RUN rm -rf /usr/share/nginx/html/*
 COPY --from=builder /frontend/dist/browser/ /usr/share/nginx/html/
 COPY scripts/nginx.conf /etc/nginx/nginx.conf
-EXPOSE 80
+USER 101
+COPY --from=builder /frontend/dist/ /usr/share/nginx/html/
+EXPOSE 8080

scripts/nginx.conf

@@ -2,10 +2,9 @@
 #   * Official English Documentation: http://nginx.org/en/docs/
 #   * Official Russian Documentation: http://nginx.org/ru/docs/
 
-user nginx;
 worker_processes auto;
 error_log /var/log/nginx/error.log;
-pid /run/nginx.pid;
+pid /tmp/nginx.pid;
 
 # Load dynamic modules. See /usr/share/doc/nginx/README.dynamic.
 include /usr/share/nginx/modules/*.conf;
@@ -31,8 +30,8 @@ http {
     default_type        application/octet-stream;
 
     server {
-        listen       80 default_server;
-        listen       [::]:80 default_server;
+        listen       8080 default_server;
+        listen       [::]:8080 default_server;
         server_name  _;
         root         /usr/share/nginx/html;