diff --git a/podman-hedgedoc/ci_build-images.sh b/podman-hedgedoc/ci_build-images.sh
index 9bf73ae..474e721 100755
--- a/podman-hedgedoc/ci_build-images.sh
+++ b/podman-hedgedoc/ci_build-images.sh
@@ -12,7 +12,7 @@ buildfolder=/tmp/hedgedoc-$$
 if ! podman image exists ${hedgedoc_image}:${hedgedoc_version}; then
     mkdir ${buildfolder} &&
         if git clone --depth=1 https://github.com/hedgedoc/container ${buildfolder}/ ; then
-            podman image build -t ${hedgedoc_image}:${hedgedoc_version} -f ${buildfolder}/alpine/Dockerfile ${buildfolder}/
+            TMPDIR=${HOME} podman image build -t ${hedgedoc_image}:${hedgedoc_version} -f ${buildfolder}/alpine/Dockerfile ${buildfolder}/
 	fi || retval=false
     rm -rf ${buildfolder}
     podman image prune -a -f --filter dangling=true
diff --git a/podman-matrix/ci_build-images.sh b/podman-matrix/ci_build-images.sh
index 30fb248..ccd58fc 100755
--- a/podman-matrix/ci_build-images.sh
+++ b/podman-matrix/ci_build-images.sh
@@ -13,7 +13,7 @@ if ! podman image exists ${synapse_image}:${synapse_version}; then
     mkdir ${buildfolder} &&
     if curl -sSfL -- "https://github.com/matrix-org/synapse/archive/refs/tags/${synapse_version}.tar.gz" | \tar xz --strip-components 1 -C ${buildfolder}/ ; then
         rm -rf "${HOME}/buildah-cache-${UID}"
-	TMPDIR=${HOME} podman build -t ${synapse_image}:${synapse_version} -f ${buildfolder}/docker/Dockerfile ${buildfolder}/ &&
+	TMPDIR=${HOME} podman image build -t ${synapse_image}:${synapse_version} -f ${buildfolder}/docker/Dockerfile ${buildfolder}/ &&
 	podman image prune -f
     fi
     rm -rf ${buildfolder}
diff --git a/podman-peerjs/ci_build-images.sh b/podman-peerjs/ci_build-images.sh
index 2cb35c3..0e75523 100755
--- a/podman-peerjs/ci_build-images.sh
+++ b/podman-peerjs/ci_build-images.sh
@@ -12,7 +12,7 @@ buildfolder=/tmp/peerjs-server-$$
 if ! podman image exists ${upstream_images}:${version}; then
     mkdir ${buildfolder} &&
     curl -sSfL -- "https://github.com/peers/peerjs-server/archive/refs/tags/v${version}.tar.gz" | \tar xz --strip-components 1 -C ${buildfolder}/ &&
-    podman image build \
+    TMPDIR=${HOME} podman image build \
            --label org.opencontainers.image.description='PeerServer helps establishing connections between PeerJS clients. Data is not proxied through the server.' \
            --label org.opencontainers.image.source='https://github.com/peers/peerjs-server' \
            --label org.opencontainers.image.title='PeerServer' \