modernize RUN commands in Containerfiles

As RUN commands on multiline is like a shell script, enable the bash
strict mode. So we can remove all the `&&` at the begin of lines.

When buildah (podman builder) recent release will be published in common
distributions (at least Debian stable), we will be able to use the
"heredoc" syntax to avoid all the `; \` at end of lines.

Author: Trim

Container.md

@@ -16,6 +16,7 @@ If you use Podman, you can either use the same Docker compose plugin or the
 [podman-compose](https://github.com/containers/podman-compose/)
 utility. The podman cli itself provide a wrapper of one of these two tools through the
 [`podman compose` command](https://docs.podman.io/en/latest/markdown/podman-compose.1.html).
+Thus you need to use the `podman compose up` command to start the system.
 
 At this point, the documentation will give you `docker compose` commands, but you should be able
 to use `podman compose` without any issue.

deployment/database/docker-entrypoint-initdb.d/001-create-database-test.sh

@@ -1,6 +1,7 @@
 #/usr/bin/env sh
 
 set -euo pipefail
+IFS=$'\n\t'
 
 mysql -uroot -hlocalhost -p"${MYSQL_ROOT_PASSWORD}" <<EOSQL
   CREATE USER IF NOT EXISTS '${MYSQL_TEST_USER}'@'%' IDENTIFIED BY '${MYSQL_TEST_PASSWORD}';