Setup shared image stores

.forgejo/workflows/build.yaml

@@ -20,10 +20,16 @@ jobs:
             git \
             netavark \
           ;
+          shared=/var/lib/shared-containers
           sed /usr/share/containers/storage.conf \
             -e '/^#\?mount_program/c\
           mount_program = "/usr/bin/fuse-overlayfs"' \
+            -e "/^additionalimagestores/a"'\
+            '"\"$shared\"" \
           > /etc/containers/storage.conf
+          mkdir -p $shared/overlay-images $shared/overlay-layers
+          touch $shared/overlay-images/images.lock
+          touch $shared/overlay-layers/layers.lock
       -
         name: Checkout repository
         run: |

builder.sh

@@ -24,11 +24,20 @@ buildah run $ctr -- apt-get install -y --no-install-recommends \
 ;
 	#gpg \
 
+shared=/var/lib/shared-containers
 buildah run $ctr -- sh -c "sed /usr/share/containers/storage.conf \
 	-e '/^#\?mount_program/c"'\
 '"mount_program = \"/usr/bin/fuse-overlayfs\"' \
+	-e '/^additionalimagestores/a"'\
+'"  \"$shared\"' \
 > /etc/containers/storage.conf"
 
+buildah run $ctr -- sc -c "\
+	mkdir -p $shared/overlay-images $shared/overlay-layers; \
+	touch $shared/overlay-images/images.lock; \
+	touch $shared/overlay-layers/layers.lock; \
+"
+
 # yq https://github.com/mikefarah/yq?tab=readme-ov-file#install
 buildah run $ctr -- sh -c "curl --silent --location \"https://github.com/mikefarah/yq/releases/download/$YQ_VERSION/yq_linux_amd64.tar.gz\" \
 	| tar --extract --gzip --to-stdout ./yq_linux_amd64 \