feat: add cockpit-zfs-manager for zfs builds (#145)

Co-authored-by: Benjamin Sherman <[email protected]>

README.md

@@ -143,6 +143,7 @@ This image builds on `ucore-minimal` but adds drivers, storage tools and utiliti
   - [snapraid](https://www.snapraid.it/)
   - usbutils(and pciutils) - technically pciutils is pulled in by open-vm-tools in ucore-minimal
 - Optional [ZFS versions](#tag-matrix) add:
+  - [cockpit-zfs-manager](https://github.com/45Drives/cockpit-zfs-manager) (an interactive ZFS on Linux admin package for Cockpit)
   - [sanoid/syncoid dependencies](https://github.com/jimsalterjrs/sanoid) - [see below](#zfs) for details
 
 #### `ucore-hci`

ucore/install-ucore.sh

@@ -13,6 +13,28 @@ fi
 export IMAGE_NAME=ucore
 /ctx/packages.sh
 
+## CONDITIONAL: ZFS support
+if [[ "-zfs" == "${ZFS_TAG}" ]]; then
+    # cockpit plugin for ZFS management
+    curl --fail --retry 5 --retry-delay 5 --retry-all-errors -sSL -o /tmp/cockpit-zfs-manager-api.json \
+        "https://api.github.com/repos/45Drives/cockpit-zfs-manager/releases/latest"
+    CZM_TGZ_URL=$(jq -r .tarball_url /tmp/cockpit-zfs-manager-api.json)
+    curl -sSL -o /tmp/cockpit-zfs-manager.tar.gz "${CZM_TGZ_URL}"
+
+    mkdir -p /tmp/cockpit-zfs-manager
+    tar -zxvf /tmp/cockpit-zfs-manager.tar.gz -C /tmp/cockpit-zfs-manager --strip-components=1
+    mv /tmp/cockpit-zfs-manager/polkit-1/actions/* /usr/share/polkit-1/actions/
+    mv /tmp/cockpit-zfs-manager/polkit-1/rules.d/* /usr/share/polkit-1/rules.d/
+    mv /tmp/cockpit-zfs-manager/zfs /usr/share/cockpit
+
+    curl -sSL -o /tmp/cockpit-zfs-manager-font-fix.sh \
+        https://raw.githubusercontent.com/45Drives/scripts/refs/heads/main/cockpit_font_fix/fix-cockpit.sh
+    chmod +x /tmp/cockpit-zfs-manager-font-fix.sh
+    /tmp/cockpit-zfs-manager-font-fix.sh
+
+    rm -rf /tmp/cockpit-zfs-manager*
+fi
+
 # install packages direct from github
 /ctx/github-release-install.sh trapexit/mergerfs "fc${RELEASE}.x86_64"