attempt 1 of moving to alpine

Dockerfile

@@ -1,12 +1,10 @@
-FROM ubuntu:23.04
+FROM alpine:3.18.2
 
 # Install dependencies
-RUN apt update
-RUN DEBIAN_FRONTEND=noninteractive \
-apt install nginx php8.1 php8.1-fpm php8.1-gd php8.1-imagick -y
-
-# Clean up
-RUN apt clean
+RUN apk update && \
+    apk upgrade && \
+    apk add --no-cache nginx php8.1 php8.1-fpm php8.1-gd php8.1-imagick && \
+    rm -rf /var/cache/apk/*
 
 # Set up nginx
 COPY ./docker/nginx.conf /etc/nginx/nginx.conf