feat: switch to kernel overlay >5.13

Dockerfile

@@ -12,7 +12,6 @@ RUN apk upgrade -U --available --no-cache && apk add --no-cache \
     make \
     yq \
     strace \
-    fuse-overlayfs \
     podman \
     buildah \
     aws-cli
@@ -22,36 +21,25 @@ RUN echo "http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/reposit
     trivy
 
 # Trivy html template
-ADD --chown=jenkins:jenkins html.tpl /home/jenkins
+ADD --chown=$USER:$USER html.tpl /home/$USER
 
 # Rootless podman
-RUN mkdir -p /home/$USER/.local/share/containers && \
-    chown $USER:$USER -R /home/$USER
+RUN mkdir -p /home/$USER/.config/containers
 
-ADD conf/containers.conf conf/registries.conf conf/storage.conf /etc/containers/
-ADD --chown=$USER:$USER conf/podman-containers.conf /home/$USER/.config/containers/containers.conf
+ADD --chown=$USER:$USER conf/containers.conf conf/registries.conf conf/storage.conf /home/$USER/.config/containers
 
-RUN mkdir -p /var/lib/shared/overlay-images /var/lib/shared/overlay-layers \
-             /var/lib/shared/vfs-images /var/lib/shared/vfs-layers && \
-    touch /var/lib/shared/overlay-images/images.lock /var/lib/shared/overlay-layers/layers.lock \
-          /var/lib/shared/vfs-images/images.lock /var/lib/shared/vfs-layers/layers.lock && \
-    mkdir /tmp/podman-run-1000 && chown $USER:$USER /tmp/podman-run-1000 && chmod 700 /tmp/podman-run-1000 && \
-    echo -e "$USER:1:999\n$USER:1001:64535" > /etc/subuid && \
+RUN echo -e "$USER:1:999\n$USER:1001:64535" > /etc/subuid && \
     echo -e "$USER:1:999\n$USER:1001:64535" > /etc/subgid && \
-    mkdir /workspace && \
-    cd /usr/bin && ln -s podman docker
+    cd /usr/bin && ln -s podman docker && \
+    chown $USER:$USER -R /home/$USER
 
 # Patch jenkins-agent to launch podman service
 RUN sed -i -e 's/exec \$JAVA_BIN/podman system service -t0\&\n        exec \$JAVA_BIN/' /usr/local/bin/jenkins-agent
 
-ENV XDG_RUNTIME_DIR=/tmp/podman-run-1000
+ENV XDG_RUNTIME_DIR=/home/$USER/agent
 ENV _CONTAINERS_USERNS_CONFIGURED=""
-ENV BUILDAH_ISOLATION=chroot
 ENV TRIVY_TEMPLATE="@/home/jenkins/html.tpl"
 
 USER $USER
 
-# Allow container layers to be stored in PVCs
-VOLUME /home/$USER/.local/share/containers
-
 ENTRYPOINT ["/sbin/tini", "--", "/usr/local/bin/jenkins-agent"]

conf/containers.conf

@@ -1,4 +1,5 @@
 [containers]
+volumes = [ "/proc:/proc" ]
 netns="host"
 userns="host"
 ipcns="host"

conf/podman-containers.conf

@@ -1,4 +0,0 @@
-[containers]
-volumes = [
-	"/proc:/proc",
-]

conf/storage.conf

@@ -1,14 +1,4 @@
 [storage]
 driver = "overlay"
-runroot = "/run/containers/storage"
-graphroot = "/var/lib/containers/storage"
-
-[storage.options]
-additionalimagestores = [
-"/var/lib/shared",
-]
-
-[storage.options.overlay]
-mount_program = "/usr/bin/fuse-overlayfs"
-mountopt = "nodev,fsync=0"
-[storage.options.thinpool]
+runroot = "/home/jenkins/agent/containers/run"
+graphroot = "/home/jenkins/agent/containers/storage"