Use PHP8.1 as docker base image.

Dockerfile

@@ -1,4 +1,4 @@
-FROM php:7-apache
+FROM php:8.1-apache
 
 # Install needed dependencies for PHP build
 RUN apt-get update &&  apt-get install -y pkg-config curl libcurl4-openssl-dev libicu-dev \

docs/docker/docker-compose.yaml

@@ -14,4 +14,6 @@ services:
     image: jbtronics/part-db1:master
     environment:
       # Put SQLite database in our mapped folder. You can configure some other kind of database here too.
-      - DATABASE_URL=sqlite:///%kernel.project_dir%/var/db/app.db
+      - DATABASE_URL=sqlite:///%kernel.project_dir%/var/db/app.db
+      # In demo env logs will be redirected to stderr
+      - APP_ENV=demo