fix(script): fix scripts in docker (#1213)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
### Summary by CodeRabbit

- Refactor: Updated the initialization script in
`e2e/testapp/docker/seed/scripts/seed0-init-step2.sh` to directly use
`/.polard` as the home directory path, enhancing the script's simplicity
and readability.
- Chore: Added a license header to
`e2e/testapp/docker/seed/scripts/set-moniker.sh` for legal compliance.
- Bug Fix: Modified the `sed` command in `set-moniker.sh` to correctly
replace the `moniker` value in the configuration file, improving the
script's functionality and reliability.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

e2e/testapp/docker/seed/scripts/seed0-init-step2.sh

@@ -28,8 +28,6 @@ if [ -z "$KEYALGO" ]; then
     KEYALGO="secp256k1"
 fi
 
-HOMEDIR="/.polard"
-
 polard genesis collect-gentxs --home "$HOMEDIR"
 
 polard genesis validate-genesis --home "$HOMEDIR"

e2e/testapp/docker/seed/scripts/set-moniker.sh

@@ -0,0 +1,27 @@
+# SPDX-License-Identifier: BUSL-1.1
+#
+# Copyright (C) 2023, Berachain Foundation. All rights reserved.
+# Use of this software is govered by the Business Source License included
+# in the LICENSE file of this repository and at www.mariadb.com/bsl11.
+#
+# ANY USE OF THE LICENSED WORK IN VIOLATION OF THIS LICENSE WILL AUTOMATICALLY
+# TERMINATE YOUR RIGHTS UNDER THIS LICENSE FOR THE CURRENT AND ALL OTHER
+# VERSIONS OF THE LICENSED WORK.
+#
+# THIS LICENSE DOES NOT GRANT YOU ANY RIGHT IN ANY TRADEMARK OR LOGO OF
+# LICENSOR OR ITS AFFILIATES (PROVIDED THAT YOU MAY USE A TRADEMARK OR LOGO OF
+# LICENSOR AS EXPRESSLY REQUIRED BY THIS LICENSE).
+#
+# TO THE EXTENT PERMITTED BY APPLICABLE LAW, THE LICENSED WORK IS PROVIDED ON
+# AN “AS IS” BASIS. LICENSOR HEREBY DISCLAIMS ALL WARRANTIES AND CONDITIONS,
+# EXPRESS OR IMPLIED, INCLUDING (WITHOUT LIMITATION) WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, AND
+# TITLE.
+
+if [ -z "$HOMEDIR" ]; then
+    HOMEDIR="/.polard"
+fi
+CONFIG_TOML=$HOMEDIR/config/config.toml
+
+MONIKER=$1
+sed -i "s/^moniker = .*/moniker = \"$MONIKER\"/" "$CONFIG_TOML"