diff --git a/db/init/01-powerbi-user.sh b/db/init/01-powerbi-user.sh
old mode 100644
new mode 100755
index e226175..61f3f4b
--- a/db/init/01-powerbi-user.sh
+++ b/db/init/01-powerbi-user.sh
@@ -6,19 +6,24 @@
 # grants below take effect as soon as Alembic creates the reporting views.
 # For an already-initialized database, run scripts/powerbi_grants.sql instead
 # (see README → "Power BI").
-set -euo pipefail
+#
+# NOTE: this file must stay executable (git mode 100755). The MySQL image
+# *sources* non-executable init scripts into its own entrypoint shell, where
+# stray `set` options can break MySQL's startup. The subshell below keeps
+# everything scoped even if that happens.
+(
+  set -e
 
-if [ -z "${POWERBI_RO_PASSWORD:-}" ]; then
-  echo "[init] POWERBI_RO_PASSWORD not set - skipping powerbi_ro user creation."
-  exit 0
-fi
-
-mysql -u root -p"${MYSQL_ROOT_PASSWORD}" <<SQL
+  if [ -z "${POWERBI_RO_PASSWORD:-}" ]; then
+    echo "[init] POWERBI_RO_PASSWORD not set - skipping powerbi_ro user creation."
+  else
+    mysql -u root -p"${MYSQL_ROOT_PASSWORD}" <<SQL
 CREATE USER IF NOT EXISTS 'powerbi_ro'@'%' IDENTIFIED BY '${POWERBI_RO_PASSWORD}';
 GRANT SELECT ON \`${MYSQL_DATABASE}\`.\`vw_ncr_full\`          TO 'powerbi_ro'@'%';
 GRANT SELECT ON \`${MYSQL_DATABASE}\`.\`vw_ncr_stage_history\` TO 'powerbi_ro'@'%';
 GRANT SELECT ON \`${MYSQL_DATABASE}\`.\`vw_ncr_costs\`         TO 'powerbi_ro'@'%';
 FLUSH PRIVILEGES;
 SQL
-
-echo "[init] powerbi_ro user created with SELECT on reporting views."
+    echo "[init] powerbi_ro user created with SELECT on reporting views."
+  fi
+)