Merge pull request 'update base image' (#1) from feature/update-base-3.20.8 into main

Reviewed-on: #1
Reviewed-by: emanuel.holzmann <emanuel.holzmann@noreply.localhost>

Dockerfile

@@ -1,5 +1,11 @@
-ARG VERSION=3.20.6
-FROM git.h2-invent.com/public-system-design/alpine-php8-webserver:${VERSION}
+FROM git.h2-invent.com/public-system-design/alpine-php8-webserver:3.20.8
+ARG VERSION
+
+LABEL Version="${VERSION}" \
+      Maintainer="H2 invent GmbH <support@h2-invent.com>" \
+      Description="Lightweight container with Nginx & PHP-FPM & SUPERCRONIC based on Alpine Linux." \
+      org.opencontainers.version="${VERSION}" \
+      org.opencontainers.image.title="Lightweight container with Nginx & PHP-FPM & SUPERCRONIC based on Alpine Linux."
 
 USER root
 

README.md

@@ -1,2 +1,19 @@
 # alpine-php8-cron-webserver
 
+Cron Commands können per Crontab in einem Dockerfile erstellt werden. Dafür müssen die Cronjobs in /var/crontab eingefügt werden:
+
+```
+RUN echo "# Docker Cron Jobs" > /var/crontab \
+    && echo "SHELL=/bin/sh" >> /var/crontab \
+    && echo "TZ=Europe/Berlin" >> /var/crontab \
+    && echo "*/10 * * * * /bin/sh /distributed_cron.sh '/var/www/html/data/cron_lock' 'php /var/www/html/bin/console cron:run'" >> /var/crontab \
+    && echo "" >> /var/crontab \
+    && chown nobody:nobody /var/crontab
+```
+
+Oder die Cronjobs könnern per ENV eingefügt werden:
+
+```
+ENV CRON_COMMAND_0="*/10 * * * * /bin/sh /distributed_cron.sh '/var/www/html/data/cron_lock' 'php /var/www/html/bin/console cron:run'"
+ENV CRON_COMMAND_1="0 0 * * * date"
+```

cron_create.sh

@@ -2,6 +2,6 @@
 
 # Schleife über alle ENV-Variablen, die mit VAR_ beginnen
 env | grep '^CRON_COMMAND_' | while IFS= read -r line; do
-    echo "$line" >> /var/crontab
+    echo "$line" | cut -d "=" -f2 >> /var/crontab
     echo "" >> /var/crontab
 done