diff --git a/.forgejo/workflows/doc.yaml b/.forgejo/workflows/doc.yaml
index 7dea469..bd811e0 100644
--- a/.forgejo/workflows/doc.yaml
+++ b/.forgejo/workflows/doc.yaml
@@ -3,7 +3,7 @@ jobs:
   build-doc:
     runs-on: docker
     container:
-      image: git.tkolb.de/amateurfunk/hamnet70/asciidoctor:1.1
+      image: git.tkolb.de/amateurfunk/hamnet70/asciidoctor:1.2
     steps:
       - uses: actions/checkout@v4
       - run: pwd && ls -hla && cd doc && make
diff --git a/doc/docker/Dockerfile b/doc/docker/Dockerfile
index cf9fce2..8688316 100644
--- a/doc/docker/Dockerfile
+++ b/doc/docker/Dockerfile
@@ -1,4 +1,4 @@
 FROM debian:stable
 
-RUN apt update && apt install -y nodejs ruby-rubygems make
+RUN apt update && apt install -y nodejs git ruby-rubygems make
 RUN gem install asciidoctor asciidoctor-diagram
diff --git a/doc/docker/build.sh b/doc/docker/build.sh
index a1928b4..5f412ee 100755
--- a/doc/docker/build.sh
+++ b/doc/docker/build.sh
@@ -1,3 +1,3 @@
 #!/bin/sh
 
-docker build -t git.tkolb.de/amateurfunk/hamnet70/asciidoctor:1.1 .
+docker build -t git.tkolb.de/amateurfunk/hamnet70/asciidoctor:1.2 .
diff --git a/doc/docker/upload.sh b/doc/docker/upload.sh
index 7de3792..5fbb017 100755
--- a/doc/docker/upload.sh
+++ b/doc/docker/upload.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
 
 docker login
-docker push git.tkolb.de/amateurfunk/hamnet70/asciidoctor:1.1
+docker push git.tkolb.de/amateurfunk/hamnet70/asciidoctor:1.2
 docker logout