Merge bitcoin/bitcoin#28353: ci: Remove /ro_base bind mount, Remove LC_ALL=C from s390x task

fa70cbd969 ci: Remove unused TEST_RUNNER_ENV="LC_ALL=C" from s390x task (MarcoFalke)
fa33354dcb ci: Remove /ro_base bind mount (MarcoFalke)
fa0df9d4c4 doc: Remove sudo from command that is already run as root (MarcoFalke)

Pull request description:

  Remove some CI stuff no longer needed.

ACKs for top commit:
  fanquake:
    ACK  fa70cbd969 - did not test the s390x job.

Tree-SHA512: 3a6ed0cfc855a92c2f834e59494c0a19a5647510247aece5e40a1aa78074894fe7454e684a1ea1f8f0662c50ac1caf2e390398b0fcfbf81544e6488fa9b8915e

.cirrus.yml

@@ -31,7 +31,7 @@ env:  # Global defaults
 #   swap:
 #
 #   ```
-#   fallocate -l 16G /swapfile_ci && chmod 600 /swapfile_ci && mkswap /swapfile_ci && swapon /swapfile_ci && ( echo '/swapfile_ci none swap sw 0 0' | sudo tee -a /etc/fstab )
+#   fallocate -l 16G /swapfile_ci && chmod 600 /swapfile_ci && mkswap /swapfile_ci && swapon /swapfile_ci && ( echo '/swapfile_ci none swap sw 0 0' | tee -a /etc/fstab )
 #   ```
 #
 # - To register the persistent worker, open a `screen` session and run:

ci/test/00_setup_env_s390x.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# Copyright (c) 2019-2022 The Bitcoin Core developers
+# Copyright (c) 2019-present The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -10,7 +10,6 @@ export HOST=s390x-linux-gnu
 export PACKAGES="python3-zmq"
 export CONTAINER_NAME=ci_s390x
 export CI_IMAGE_NAME_TAG="docker.io/s390x/debian:bookworm"
-export TEST_RUNNER_ENV="LC_ALL=C"
 export TEST_RUNNER_EXTRA="--exclude feature_init,rpc_bind,feature_bind_extra"  # Excluded for now, see https://github.com/bitcoin/bitcoin/issues/17765#issuecomment-602068547
 export RUN_FUNCTIONAL_TESTS=true
 export GOAL="install"

ci/test/04_install.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# Copyright (c) 2018-2022 The Bitcoin Core developers
+# Copyright (c) 2018-present The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -32,13 +32,13 @@ if [ -z "$DANGER_RUN_CI_ON_HOST" ]; then
 
   # shellcheck disable=SC2086
   CI_CONTAINER_ID=$(docker run $CI_CONTAINER_CAP --rm --interactive --detach --tty \
-                  --mount type=bind,src=$BASE_READ_ONLY_DIR,dst=/ro_base,readonly \
+                  --mount "type=bind,src=$BASE_READ_ONLY_DIR,dst=$BASE_READ_ONLY_DIR,readonly" \
                   --mount "type=volume,src=${CONTAINER_NAME}_ccache,dst=$CCACHE_DIR" \
                   --mount "type=volume,src=${CONTAINER_NAME}_depends,dst=$DEPENDS_DIR" \
                   --mount "type=volume,src=${CONTAINER_NAME}_previous_releases,dst=$PREVIOUS_RELEASES_DIR" \
                   --env-file /tmp/env \
-                  --name $CONTAINER_NAME \
-                  $CONTAINER_NAME)
+                  --name "$CONTAINER_NAME" \
+                  "$CONTAINER_NAME")
   export CI_CONTAINER_ID
   export CI_EXEC_CMD_PREFIX="docker exec ${CI_CONTAINER_ID}"
 else
@@ -56,7 +56,7 @@ export -f CI_EXEC
 # Normalize all folders to BASE_ROOT_DIR
 CI_EXEC rsync --archive --stats --human-readable "${BASE_READ_ONLY_DIR}/" "${BASE_ROOT_DIR}" || echo "Nothing to copy from ${BASE_READ_ONLY_DIR}/"
 CI_EXEC "${BASE_ROOT_DIR}/ci/test/01_base_install.sh"
-CI_EXEC rsync --archive --stats --human-readable /ro_base/ "${BASE_ROOT_DIR}" || echo "Nothing to copy from ro_base"
+
 # Fixes permission issues when there is a container UID/GID mismatch with the owner
 # of the git source code directory.
 CI_EXEC git config --global --add safe.directory \"*\"