Client: use TEZOS_CLIENT_UNSAFE_DISABLE_DISCLAIMER=Y to disable the banner

src/bin_client/main_client.ml

@@ -9,7 +9,15 @@
 
 open Client_config
 
+let disable_disclaimer =
+  match Sys.getenv_opt "TEZOS_CLIENT_UNSAFE_DISABLE_DISCLAIMER" with
+  | Some ("yes" | "y" | "YES" | "Y") -> true
+  | _ -> false
+
 let display_warning_banner ctxt =
+  if disable_disclaimer then
+    Lwt.return ()
+  else
     let default () =
       Format.eprintf
         "@[<v 2>@{<warning>@{<title>Warning@}@}@,@,\

src/bin_client/test/test_lib.inc.sh

@@ -7,6 +7,8 @@ cd "$test_dir"
 sandbox_file="$test_dir/sandbox.json"
 parameters_file="$test_dir/protocol_parameters.json"
 
+export TEZOS_CLIENT_UNSAFE_DISABLE_DISCLAIMER=Y
+
 tezos_sandboxed_node="${1:-$test_dir/../../bin_node/tezos-sandboxed-node.sh}"
 local_node="${2:-$test_dir/../../../_build/default/src/bin_node/main.exe}"
 tezos_init_sandboxed_client="${3:-$test_dir/../../bin_client/tezos-init-sandboxed-client.sh}"