diff --git a/scripts/ci-deploy-production.sh b/scripts/ci-deploy-production.sh
index dab8a5d..0b666e2 100755
--- a/scripts/ci-deploy-production.sh
+++ b/scripts/ci-deploy-production.sh
@@ -75,12 +75,12 @@ debug() {
 cleanup() {
     local exit_code=$?
     
-    if [[ -f "$LOCK_FILE" ]]; then
+    if [ -f "$LOCK_FILE" ]; then
         debug "Removing deployment lock file"
         rm -f "$LOCK_FILE"
     fi
     
-    if [[ $exit_code -ne 0 && "$ROLLBACK_NEEDED" == "true" ]]; then
+    if [ $exit_code -ne 0 ] && [ "$ROLLBACK_NEEDED" = "true" ]; then
         error "Deployment failed - attempting rollback..."
         attempt_rollback
     fi
@@ -98,14 +98,14 @@ retry_command() {
     local description="$2"
     local attempt=1
     
-    while [[ $attempt -le $MAX_RETRIES ]]; do
+    while [ $attempt -le $MAX_RETRIES ]; do
         log "Attempt $attempt/$MAX_RETRIES: $description"
         
         if eval "$cmd"; then
             success "$description completed successfully"
             return 0
         else
-            if [[ $attempt -eq $MAX_RETRIES ]]; then
+            if [ $attempt -eq $MAX_RETRIES ]; then
                 error "$description failed after $MAX_RETRIES attempts"
                 return 1
             else
@@ -114,7 +114,7 @@ retry_command() {
             fi
         fi
         
-        ((attempt++))
+        attempt=$((attempt + 1))
     done
 }
 
@@ -178,7 +178,7 @@ pre_flight_checks() {
 get_current_image_id() {
     if docker stack ps "${CI_REPO_NAME}" >/dev/null 2>&1; then
         OLD_IMAGE_HASH=$(docker stack ps "${CI_REPO_NAME}" --format "table {{.Image}}" | grep authelia | head -n1 || echo "")
-        if [[ -n "$OLD_IMAGE_HASH" ]]; then
+        if [ -n "$OLD_IMAGE_HASH" ]; then
             debug "Current image for rollback: $OLD_IMAGE_HASH"
         fi
     fi
@@ -186,7 +186,7 @@ get_current_image_id() {
 
 # Rollback function
 attempt_rollback() {
-    if [[ -n "$OLD_IMAGE_HASH" && "$OLD_IMAGE_HASH" != "IMAGE" ]]; then
+    if [ -n "$OLD_IMAGE_HASH" ] && [ "$OLD_IMAGE_HASH" != "IMAGE" ]; then
         warning "Attempting rollback to previous image: $OLD_IMAGE_HASH"
         
         # This would require a more complex rollback mechanism
@@ -233,9 +233,9 @@ force_pull_latest_images() {
     retry_command "docker pull $redis_image" "Redis image pull"
     
     # Verify we have a new image hash
-    if [[ -n "$NEW_IMAGE_HASH" && "$NEW_IMAGE_HASH" != "$OLD_IMAGE_HASH" ]]; then
+    if [ -n "$NEW_IMAGE_HASH" ] && [ "$NEW_IMAGE_HASH" != "$OLD_IMAGE_HASH" ]; then
         success "🔄 New image detected: $OLD_IMAGE_HASH → $NEW_IMAGE_HASH"
-    elif [[ -n "$NEW_IMAGE_HASH" ]]; then
+    elif [ -n "$NEW_IMAGE_HASH" ]; then
         warning "⚠️ Same image hash detected: $NEW_IMAGE_HASH (this may be expected)"
     else
         error "❌ Could not determine new image hash"
@@ -254,13 +254,13 @@ get_container_diagnostics() {
     local tasks
     tasks=$(docker service ps "${CI_REPO_NAME}_${service_name}" --format "{{.ID}}\t{{.Name}}\t{{.CurrentState}}\t{{.Error}}" --no-trunc)
     
-    if [[ -n "$tasks" ]]; then
+    if [ -n "$tasks" ]; then
         error "Service tasks:"
         echo "$tasks" | while IFS=$'\t' read -r task_id name state task_error; do
             error "  Task: $name"
             error "    ID: $task_id"
             error "    State: $state"
-            if [[ -n "$task_error" ]]; then
+            if [ -n "$task_error" ]; then
                 error "    Error: $task_error"
             fi
             
@@ -268,7 +268,7 @@ get_container_diagnostics() {
             log "Attempting to get logs for task $task_id..."
             local task_logs
             task_logs=$(docker service logs "${CI_REPO_NAME}_${service_name}" --raw --tail 20 2>/dev/null || echo "No logs available")
-            if [[ "$task_logs" != "No logs available" ]]; then
+            if [ "$task_logs" != "No logs available" ]; then
                 error "    Recent logs:"
                 echo "$task_logs" | sed 's/^/      /'
             fi
@@ -285,7 +285,7 @@ get_container_diagnostics() {
     local containers
     containers=$(docker ps -a --filter "label=com.docker.swarm.service.name=${CI_REPO_NAME}_${service_name}" --format "{{.ID}}\t{{.Status}}\t{{.Names}}" 2>/dev/null || echo "")
     
-    if [[ -n "$containers" ]]; then
+    if [ -n "$containers" ]; then
         error "Associated containers:"
         echo "$containers" | while IFS=$'\t' read -r container_id status name; do
             error "  Container: $name ($container_id)"
@@ -311,12 +311,12 @@ wait_for_stack_removal() {
     local elapsed=0
     
     while docker stack ls | grep -q "${CI_REPO_NAME}"; do 
-        if [[ $elapsed -ge $timeout ]]; then
+        if [ $elapsed -ge $timeout ]; then
             error "Stack removal timeout after ${timeout} seconds"
             return 1
         fi
         
-        if [[ $((elapsed % 10)) -eq 0 ]]; then  # Log every 10 seconds instead of 5
+        if [ $((elapsed % 10)) -eq 0 ]; then  # Log every 10 seconds instead of 5
             log "Stack still exists, waiting... (${elapsed}s/${timeout}s)"
         fi
         sleep 2  # Check every 2 seconds instead of 5
@@ -410,12 +410,12 @@ comprehensive_health_check() {
     local authelia_healthy=false
     local last_status=""
     
-    while [[ $check_count -lt $max_checks ]]; do
+    while [ $check_count -lt $max_checks ]; do
         local current_time=$(date +%s)
         local elapsed=$((current_time - start_time))
         
         # Only log every 10 seconds to reduce noise
-        if [[ $((check_count % 5)) -eq 0 ]]; then
+        if [ $((check_count % 5)) -eq 0 ]; then
             log "Health check ${check_count}/${max_checks} (${elapsed}s elapsed)"
         fi
         
@@ -423,7 +423,7 @@ comprehensive_health_check() {
         local service_status
         service_status=$(docker stack ps "${CI_REPO_NAME}" --format "{{.Name}}\t{{.CurrentState}}\t{{.Error}}" | grep "authelia_authelia" | head -n1)
         
-        if [[ -n "$service_status" ]]; then
+        if [ -n "$service_status" ]; then
             local name=$(echo "$service_status" | cut -f1)
             local state=$(echo "$service_status" | cut -f2)
             local error_msg=$(echo "$service_status" | cut -f3)
@@ -431,17 +431,17 @@ comprehensive_health_check() {
             # Check for Running state
             if echo "$state" | grep -q "Running"; then
                 # Verify it's actually stable by checking for a few seconds
-                if [[ "$last_status" == "Running" ]]; then
+                if [ "$last_status" = "Running" ]; then
                     # Double-check: no recent failures
                     local failed_count
                     failed_count=$(docker stack ps "${CI_REPO_NAME}" | grep "authelia_authelia" | grep -c "Failed" || echo "0")
                     
-                    if [[ $failed_count -eq 0 ]]; then
+                    if [ $failed_count -eq 0 ]; then
                         # Final verification: ensure we're using the new image
                         local current_image
                         current_image=$(docker stack ps "${CI_REPO_NAME}" --format "{{.Image}}" | grep authelia | head -n1)
                         
-                        if [[ "$current_image" == *"$NEW_IMAGE_HASH"* ]] || [[ -z "$NEW_IMAGE_HASH" ]]; then
+                        if echo "$current_image" | grep -q "$NEW_IMAGE_HASH" || [ -z "$NEW_IMAGE_HASH" ]; then
                             success "✅ Authelia service is healthy and running!"
                             success "🎯 Using correct image: $current_image"
                             success "⚡ Total deployment time: ${elapsed} seconds"
@@ -457,7 +457,7 @@ comprehensive_health_check() {
                 last_status="Running"
             elif echo "$state" | grep -q "Failed\|Rejected\|Shutdown"; then
                 error "❌ Service failed: $state"
-                if [[ -n "$error_msg" ]]; then
+                if [ -n "$error_msg" ]; then
                     error "Error: $error_msg"
                 fi
                 break  # Exit early on clear failure
@@ -467,12 +467,12 @@ comprehensive_health_check() {
             fi
         fi
         
-        if [[ $elapsed -ge $timeout ]]; then
+        if [ $elapsed -ge $timeout ]; then
             break
         fi
         
         sleep 2
-        ((check_count++))
+        check_count=$((check_count + 1))
     done
     
     # Health check failed - provide comprehensive diagnostics
@@ -482,8 +482,8 @@ comprehensive_health_check() {
     # Get detailed diagnostics for each service
     log "🔍 Gathering comprehensive diagnostics..."
     
-    local services=("authelia" "mariadb" "redis")
-    for service in "${services[@]}"; do
+    local services="authelia mariadb redis"
+    for service in $services; do
         if docker service ls --format "{{.Name}}" | grep -q "${CI_REPO_NAME}_${service}"; then
             get_container_diagnostics "$service"
         else