diff --git a/util/manibuilder/Dockerfile.ubuntu-debootstrap b/util/manibuilder/Dockerfile.ubuntu-debootstrap
index 6025e72..1762506 100644
--- a/util/manibuilder/Dockerfile.ubuntu-debootstrap
+++ b/util/manibuilder/Dockerfile.ubuntu-debootstrap
@@ -22,6 +22,8 @@
 	{ apt-get -qqy install libjaylink-dev libgpiod-dev || true; } && \
 	apt-get clean
 
+RUN mkdir -p -m 1777 /ccache
+
 ENV GIT_SSL_NO_VERIFY=1
 USER mani
 
@@ -31,6 +33,12 @@
 	mkdir .ccache && chown mani:mani .ccache && \
 	git clone ${ORIGIN} flashrom
 
+ARG IDENT=mani
+ARG CCACHE_MAX=32M
+RUN \
+	ccache --set-config cache_dir=/ccache/${IDENT} && \
+	ccache --set-config max_size=${CCACHE_MAX}
+
 ENV DEVSHELL /bin/bash
 COPY mani-wrapper.sh /home/mani/
 ENTRYPOINT ["/bin/sh", "/home/mani/mani-wrapper.sh"]