fix(teepot-vault-unseal-sgx): pass CA_CERT_FILE

Although the file was included, it was not in the standard location.
Passing the absolute path fixes the issue.

The CA file is needed for the raft join command.

Signed-off-by: Harald Hoyer <harald@matterlabs.dev>

packages/container-vault-unseal-sgx-azure/default.nix

@@ -41,6 +41,7 @@ nixsgxLib.mkSGXContainer {
         VAULT_AUTH_TEE_SHA256_FILE = "${vat.vault-auth-tee.sha}/share/vault-auth-tee.sha256";
         ### TODO: remove hardcoded version ###
         VAULT_AUTH_TEE_VERSION = "0.1.0+dev";
+        CA_CERT_FILE = "${teepot.container-vault-start-config}/opt/vault/cacert.pem";
       };
     };