Try to reuse ACME account key

.gitlab/ci_scripts/install_zerossl_issuer.sh

@@ -10,6 +10,7 @@ set -euo pipefail
 
 # Create secret with HMAC key
 b64secret=$(echo -n "${ZEROSSL_EAB_HMAC_KEY}" | base64 -w0)
+b64tlskey=$(echo -n "${ZEROSSL_TLS_KEY}" | base64 -w0)
 
 # Wait until cert-manager is ready
 "$(dirname "$0")/retry_cmd_until_success.sh" 30 10 "flux get kustomization --status-selector ready=true --no-header | grep '^core'"
@@ -19,6 +20,14 @@ kubectl apply -n cert-manager -f - <<EOF
 ---
 apiVersion: v1
 kind: Secret
+metadata:
+  namespace: cert-manager
+  name: zerossl-prod
+data:
+  tls.key: ${b64tlskey}
+---
+apiVersion: v1
+kind: Secret
 metadata:
   namespace: cert-manager
   name: zerossl-eabsecret
@@ -38,7 +47,8 @@ spec:
       keySecretRef:
         name: zerossl-eabsecret
         key: secret
-    # Name of a secret used to store the ACME account private key
+    # Name of the secret used to get the ACME account private key
+    disableAccountKeyGeneration: true
     privateKeySecretRef:
       name: zerossl-prod
     solvers: