chore: update to fix linting

Author: Lukas Holzer

Dockerfile

@@ -223,8 +223,8 @@ RUN adduser --system --disabled-password --uid 2500 --group --quiet buildbot --h
 
 USER buildbot
 
-RUN git clone https://github.com/asdf-vm/asdf.git ~/.asdf --branch v0.10.2 && \
-    /bin/bash -c ". $HOME/.asdf/asdf.sh"
+RUN git clone https://github.com/asdf-vm/asdf.git /opt/buildhome/.asdf --branch v0.10.2 && \
+    /bin/bash -c ". /opt/buildhome/.asdf/asdf.sh"
 
 ENV PATH "$PATH:/opt/buildhome/.asdf/bin"