fix the newline problem with stringData

entrypoint.sh

@@ -4,7 +4,7 @@ cd /root
 
 /bin/ipfs-key "$@" 2> /root/keygen.stderr 1> peer.key
 awk '/^ID for generated key:/ {print $5}' < keygen.stderr > peer.id
-xxd -p -l 32 -c 32 /dev/random > cluster.key
+xxd -p -l 32 -c 32 /dev/random | tr -d '\n' > cluster.key
 
 cat << EOF
 ---
@@ -20,9 +20,10 @@ apiVersion: v1
 kind: Secret
 metadata:
   name: ipfs-secrets
-data:
+stringData:
   cluster-secret: |-
-    $(base64 -w 0 cluster.key)
+    $(xxd -p -l 32 -c 32 /dev/random)
+data:
   bootstrap-peer-priv-key: |-
     $(base64 -w 0 peer.key)
 EOF