diff --git a/arch-builder/Dockerfile b/arch-builder/Dockerfile
index bce5876..22b0ab3 100644
--- a/arch-builder/Dockerfile
+++ b/arch-builder/Dockerfile
@@ -103,9 +103,11 @@ RUN pacman -S --noconfirm nodejs npm docker docker-buildx btrfs-progs
 RUN mkdir /downloads
 WORKDIR /downloads
 RUN curl --retry 3 -OJ https://gitea.woggioni.net/api/packages/woggioni/generic/gitea-act-runner/0.2.10/gitea-act-runner-0.2.10-1-x86_64.pkg.tar.zst
+RUN curl --retry 3 -OJ https://gitea.woggioni.net/api/packages/woggioni/generic/jdk21-graalvm-bin/21.0.5/jdk21-graalvm-bin-21.0.5-1-x86_64.pkg.tar.zst
 RUN pacman -U --noconfirm *.pkg.tar.*
 WORKDIR /
 RUN rm -rf /downloads
+RUN --mount=type=bind,source=woggioni.net.ca.pem,target=/root.pem trust anchor root.pem
 USER luser
 WORKDIR /home/luser
 CMD /usr/lib/gitea/act_runner/act_runner daemon --config /var/lib/gitea/act_runner.yaml
\ No newline at end of file