update remaining docker images to alpine 3.21

Signed-off-by: Simon L. <[email protected]>

Containers/apache/Dockerfile

@@ -2,7 +2,7 @@
 FROM caddy:2.8.4-alpine AS caddy
 
 # From https://github.com/docker-library/httpd/blob/master/2.4/alpine/Dockerfile
-FROM httpd:2.4.62-alpine3.20
+FROM httpd:2.4.62-alpine3.21
 
 COPY --from=caddy /usr/bin/caddy /usr/bin/caddy
 

Containers/imaginary/Dockerfile

@@ -1,7 +1,7 @@
 # syntax=docker/dockerfile:latest
-FROM golang:1.23.4-alpine3.20 AS go
+FROM golang:1.23.4-alpine3.21 AS go
 
-ENV IMAGINARY_HASH=8f36a26c448be8c151a3878404b75fcd1cd3cf0c
+ENV IMAGINARY_HASH=8f36a26c448be8c151a3878404b75fcd1cd3cf0c
 
 RUN set -ex; \
     apk add --no-cache \

Containers/mastercontainer/Dockerfile

@@ -5,8 +5,8 @@ FROM docker:27.4.0-cli AS docker
 # Caddy is a requirement
 FROM caddy:2.8.4-alpine AS caddy
 
-# From https://github.com/docker-library/php/blob/master/8.3/alpine3.20/fpm/Dockerfile
-FROM php:8.3.14-fpm-alpine3.20
+# From https://github.com/docker-library/php/blob/master/8.3/alpine3.21/fpm/Dockerfile
+FROM php:8.3.14-fpm-alpine3.21
 
 EXPOSE 80
 EXPOSE 8080

Containers/nextcloud/Dockerfile

@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:latest
-FROM php:8.3.14-fpm-alpine3.20
+FROM php:8.3.14-fpm-alpine3.21
 
 ENV PHP_MEMORY_LIMIT=512M
 ENV PHP_UPLOAD_LIMIT=16G

Containers/postgresql/Dockerfile

@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:latest
-# From https://github.com/docker-library/postgres/blob/master/16/alpine3.20/Dockerfile
+# From https://github.com/docker-library/postgres/blob/master/16/alpine3.21/Dockerfile
 FROM postgres:16.6-alpine
 
 COPY --chmod=775 start.sh /start.sh

Containers/talk-recording/Dockerfile

@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:latest
-FROM python:3.13.1-alpine3.20
+FROM python:3.13.1-alpine3.21
 
 COPY --chmod=775 start.sh /start.sh
 COPY --chmod=775 healthcheck.sh /healthcheck.sh

readme.md

@@ -731,7 +731,7 @@ You might want to adjust the Nextcloud apps that are installed upon the first st
 ### How to add OS packages permanently to the Nextcloud container?
 Some Nextcloud apps require additional external dependencies that must be bundled within Nextcloud container in order to work correctly. As we cannot put each and every dependency for all apps into the container - as this would make the project quickly unmaintainable - there is an official way in which you can add additional dependencies into the Nextcloud container. However note that doing this is disrecommended since we do not test Nextcloud apps that require external dependencies. 
 
-You can do so by adding `--env NEXTCLOUD_ADDITIONAL_APKS="imagemagick dependency2 dependency3"` to the docker run command of the mastercontainer (but before the last line `nextcloud/all-in-one:latest`! If it was started already, you will need to stop the mastercontainer, remove it (no data will be lost) and recreate it using the docker run command that you initially used) and customize the value to your fitting. It must be a string with small letters a-z, digits 0-9, spaces, dots and hyphens or '_'. You can find available packages here: https://pkgs.alpinelinux.org/packages?branch=v3.20. By default `imagemagick` is added. If you want to keep it, you need to specify it as well.
+You can do so by adding `--env NEXTCLOUD_ADDITIONAL_APKS="imagemagick dependency2 dependency3"` to the docker run command of the mastercontainer (but before the last line `nextcloud/all-in-one:latest`! If it was started already, you will need to stop the mastercontainer, remove it (no data will be lost) and recreate it using the docker run command that you initially used) and customize the value to your fitting. It must be a string with small letters a-z, digits 0-9, spaces, dots and hyphens or '_'. You can find available packages here: https://pkgs.alpinelinux.org/packages?branch=v3.21. By default `imagemagick` is added. If you want to keep it, you need to specify it as well.
 
 ### How to add PHP extensions permanently to the Nextcloud container?
 Some Nextcloud apps require additional php extensions that must be bundled within Nextcloud container in order to work correctly. As we cannot put each and every dependency for all apps into the container - as this would make the project quickly unmaintainable - there is an official way in which you can add additional php extensions into the Nextcloud container. However note that doing this is disrecommended since we do not test Nextcloud apps that require additional php extensions.