diff --git a/.gitea/workflows/build-jupyter-ganymede.yaml b/.gitea/workflows/build-jupyter-ganymede.yaml
index e11e170..e636645 100644
--- a/.gitea/workflows/build-jupyter-ganymede.yaml
+++ b/.gitea/workflows/build-jupyter-ganymede.yaml
@@ -30,6 +30,7 @@ jobs:
         with:
           context: "{{defaultContext}}:jupyter-ganymede"
           platforms: linux/amd64,linux/arm64
+          ssh: default=/home/luser/.ssh/id_ed25519
           push: true
           pull: true
           tags: gitea.woggioni.net/woggioni/jupyter-ganymede:latest
diff --git a/jupyter-ganymede/Dockerfile b/jupyter-ganymede/Dockerfile
index ce75af8..df811dd 100644
--- a/jupyter-ganymede/Dockerfile
+++ b/jupyter-ganymede/Dockerfile
@@ -10,8 +10,8 @@ RUN --mount=type=cache,target=/var/cache/apk/,sharing=locked \
 USER jovyan
 WORKDIR /home/jovyan
 #RUN curl -O https://repo1.maven.org/maven2/dev/hcf/ganymede/ganymede/2.1.2.20230910/ganymede-2.1.2.20230910.jar
-#ADD --chown=jovyan:jovyan https://github.com/allen-ball/ganymede.git ganymede
-RUN git clone https://github.com/allen-ball/ganymede.git ganymede
+ADD --chown=jovyan:jovyan https://github.com/allen-ball/ganymede.git#trunk ganymede
+#RUN git clone https://github.com/allen-ball/ganymede.git ganymede
 WORKDIR /home/jovyan/ganymede
 RUN --mount=type=cache,target=/home/jovyan/.m2/,uid=1000,gid=1000,sharing=locked mvn -Dmaven.test.skip=true -q package