diff --git a/root/etc/cont-init.d/01-migrations b/root/etc/cont-init.d/01-migrations
index aaf084a..37f5b78 100755
--- a/root/etc/cont-init.d/01-migrations
+++ b/root/etc/cont-init.d/01-migrations
@@ -1,4 +1,5 @@
-#!/bin/bash
+#!/usr/bin/with-contenv bash
+# shellcheck shell=bash
 
 MIGRATIONS_DIR="/migrations"
 MIGRATIONS_HISTORY="/config/.migrations"
@@ -6,25 +7,27 @@ MIGRATIONS_HISTORY="/config/.migrations"
 echo "[migrations] started"
 
 if [[ ! -d ${MIGRATIONS_DIR} ]]; then
-  echo "[migrations] no migrations found"
-  exit
+    echo "[migrations] no migrations found"
+    exit
 fi
 
 for MIGRATION in $(find ${MIGRATIONS_DIR}/* | sort -n); do
-  NAME="$(basename "${MIGRATION}")"
-  if [[ -f ${MIGRATIONS_HISTORY} ]] && grep -Fxq "${NAME}" ${MIGRATIONS_HISTORY}; then
-    echo "[migrations] ${NAME}: skipped"
-    continue
-  fi
-  echo "[migrations] ${NAME}: executing..."
-  chmod +x "${MIGRATION}"
-  EXIT_CODE=$(/bin/bash "${MIGRATION}"; echo $?)
-  if [[ ${EXIT_CODE} -ne 0 ]]; then
-    echo "[migrations] ${NAME}: failed with exit code ${EXIT_CODE}, contact support"
-    exit "${EXIT_CODE}"
-  fi
-  echo "${NAME}" >> ${MIGRATIONS_HISTORY}
-  echo "[migrations] ${NAME}: succeeded"
+    NAME="$(basename "${MIGRATION}")"
+    if [[ -f ${MIGRATIONS_HISTORY} ]] && grep -Fxq "${NAME}" ${MIGRATIONS_HISTORY}; then
+        echo "[migrations] ${NAME}: skipped"
+        continue
+    fi
+    echo "[migrations] ${NAME}: executing..."
+    chmod +x "${MIGRATION}"
+    # Execute migration script in a subshell to prevent it from modifying the current environment
+    ("${MIGRATION}")
+    EXIT_CODE=$?
+    if [[ ${EXIT_CODE} -ne 0 ]]; then
+        echo "[migrations] ${NAME}: failed with exit code ${EXIT_CODE}, contact support"
+        exit "${EXIT_CODE}"
+    fi
+    echo "${NAME}" >>${MIGRATIONS_HISTORY}
+    echo "[migrations] ${NAME}: succeeded"
 done
 
 echo "[migrations] done"