2026 modernization

- use absolute base image names
- add Trixie support
- user debian/eol for Buster

trixie_php8/Dockerfile-base

@@ -0,0 +1,33 @@
+FROM docker.io/debian:trixie
+LABEL maintainer="jan@dittberner.info"
+VOLUME /srv
+
+RUN apt-get update \
+    && DEBIAN_FRONTEND=noninteractive \
+    apt-get install -y --no-install-recommends \
+    ca-certificates \
+    dumb-init \
+    libnss-ldapd \
+    nullmailer \
+    openssl \
+    php-mail \
+    php-mail-mime \
+    php-net-smtp \
+    php-net-socket \
+    php8.4 \
+    php8.4-curl \
+    php8.4-fpm \
+    php8.4-fpm \
+    php8.4-gd \
+    php8.4-imagick \
+    php8.4-intl \
+    php8.4-mbstring \
+    php8.4-opcache \
+    php8.4-pspell \
+    php8.4-sqlite3 \
+    php8.4-zip \
+    psmisc \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*.*
+
+ADD --chown=root:root nsswitch.conf nslcd.conf /etc/