Wait for the network before fetching IPFS manifests on first boot

After an ISO install, dappnode_install.sh runs from rc.local, which does
not wait for DHCP: Debian configures the NIC as allow-hotplug, and
network-online.target does not wait for those. Fetching the
NOTIFICATIONS/PREMIUM manifests, the first network access of an ISO
install, could therefore run before the machine had an address and
abort the installation with "Could not fetch IPFS manifest".

Retry the fetch for up to ~2 minutes before giving up.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: Marketen

scripts/dappnode_install.sh

@@ -428,7 +428,17 @@ normalize_ipfs_version_ref() {
         local cid_path="$ref"
         local manifest_url="${IPFS_ENDPOINT%/}${cid_path}/dappnode_package.json"
         local manifest
-        manifest="$(download_stdout "$manifest_url" 2>/dev/null || true)"
+        # On the first boot after an ISO install this runs from rc.local, which
+        # does not wait for DHCP (Debian's allow-hotplug interfaces are not part
+        # of network-online.target), so give the network up to ~2 minutes.
+        local attempt
+        for attempt in $(seq 1 24); do
+            manifest="$(download_stdout "$manifest_url" 2>/dev/null || true)"
+            [[ -n "$manifest" ]] && break
+            # stdout is this function's return value, so report on stderr
+            [[ "$attempt" -eq 1 ]] && warn "Could not fetch IPFS manifest for ${comp} yet, retrying..." >&2
+            [[ "$attempt" -lt 24 ]] && sleep 5
+        done
         if [[ -z "$manifest" ]]; then
             error "Could not fetch IPFS manifest for ${comp} from: $manifest_url"
             error "Provide ${comp}_VERSION as /ipfs/<cid>:<version> (example: /ipfs/Qm...:0.2.11)"