diff --git a/mediawiki/Containerfile b/mediawiki/Containerfile
index bd31bad..64821fe 100644
--- a/mediawiki/Containerfile
+++ b/mediawiki/Containerfile
@@ -1,28 +1,39 @@
 FROM alpine AS builder
 
+ARG MW_VERSION=1.42.4
+ARG MW_RELEASE=REL1_42
+
 WORKDIR /usr/src
 
 RUN apk update && apk add git
 
-ADD https://releases.wikimedia.org/mediawiki/1.42/mediawiki-1.42.4.tar.gz .
-RUN tar -xzf mediawiki-1.42.4.tar.gz && mv mediawiki-1.42.4 mediawiki
+ADD https://releases.wikimedia.org/mediawiki/1.42/mediawiki-${MW_VERSION}.tar.gz .
+RUN tar -xzf mediawiki-${MW_VERSION}.tar.gz && mv mediawiki-${MW_VERSION} mediawiki
 
 WORKDIR /usr/src/mediawiki
 
-RUN git clone -b REL1_42 https://gerrit.wikimedia.org/r/mediawiki/extensions/MobileFrontend extensions/MobileFrontend; \
+RUN git clone -b ${MW_RELEASE} https://gerrit.wikimedia.org/r/mediawiki/extensions/MobileFrontend extensions/MobileFrontend; \
     rm -rf extensions/MobileFrontend/.git
 
-RUN git clone -b REL1_42 https://gerrit.wikimedia.org/r/mediawiki/extensions/PluggableAuth extensions/PluggableAuth; \
+RUN git clone -b ${MW_RELEASE} https://gerrit.wikimedia.org/r/mediawiki/extensions/PluggableAuth extensions/PluggableAuth; \
     rm -rf extensions/PluggableAuth/.git
 
-RUN git clone -b REL1_42 https://gerrit.wikimedia.org/r/mediawiki/extensions/OpenIDConnect extensions/OpenIDConnect; \
+RUN git clone -b ${MW_RELEASE} https://gerrit.wikimedia.org/r/mediawiki/extensions/OpenIDConnect extensions/OpenIDConnect; \
     rm -rf extensions/OpenIDConnect/.git
 
-RUN git clone -b REL1_42 https://gerrit.wikimedia.org/r/mediawiki/extensions/Widgets extensions/Widgets; \
+RUN git clone -b ${MW_RELEASE} https://gerrit.wikimedia.org/r/mediawiki/extensions/Widgets extensions/Widgets; \
     rm -rf extensions/Widgets/.git
 
 FROM docker.io/library/unit:php8.2
 
+LABEL org.opencontainers.image.authors=""
+LABEL org.opencontainers.image.url="https://dev.ccchb.de/ccchb/oci-images/src/branch/main/mediawiki"
+LABEL org.opencontainers.image.source="https://dev.ccchb.de/ccchb/oci-images/src/branch/main/mediawiki"
+LABEL org.opencontainers.image.documentation="https://dev.ccchb.de/ccchb/oci-images/src/branch/main/mediawiki"
+LABEL org.opencontainers.image.version=26.0.5
+LABEL org.opencontainers.image.vendor="CCC Bremen"
+LABEL org.opencontainers.image.description="Keycloak image for auth.ccchb.de"
+
 WORKDIR /var/www/html
 
 RUN apt-get update && apt-get install -y \