diff --git a/Dockerfile b/Dockerfile
index 1fef778..b8fc3cf 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,7 @@ WORKDIR /app
 
 COPY package.json yarn.lock ./
 
-RUN yarn install --frozen-lockfile
+RUN yarn install --frozen-lockfile sharp
 
 COPY . .
 COPY ./src/app/favicon.ico ./public/favicon.ico
@@ -24,6 +24,8 @@ ENV NODE_ENV=production
 
 USER nextjs
 
+RUN mkdir -p ./.next/cache
+
 COPY --from=builder /app/public ./public
 COPY --from=builder /app/.next/standalone ./
 COPY --from=builder /app/.next/static ./.next/static
diff --git a/src/app/api/contact/route.ts b/src/app/api/contact/route.ts
index 3ab2617..18454b6 100644
--- a/src/app/api/contact/route.ts
+++ b/src/app/api/contact/route.ts
@@ -44,6 +44,8 @@ export async function POST(req: NextRequest) {
 
   const cf_token = data["cf-turnstile-response"];
 
+  console.log(`[${agent}] Verify captcha`);
+
   if (typeof cf_token !== 'string' || !cf_token.trim()) {
     return NextResponse.json(
       { error: "Captcha Failed" },
@@ -59,6 +61,8 @@ export async function POST(req: NextRequest) {
       { status: 403 }
     );
   }
+  
+  console.log(`[${agent}] Verify rate limit`);
 
   const isRateLimited = await rateLimited(agent);
   
@@ -76,12 +80,16 @@ export async function POST(req: NextRequest) {
     );
   }
 
+  console.log(`[${agent}] Sending email...`);
+
   try {
     const email = data.anon || !data.email ? process.env.SMTP_USER : data.email;
     const name = trimTooLong(data.anon || !data.name ? 'Anonymous' : data.name, 20);
 
     await sendEmail(name, email, data.message);
 
+    console.log(`[${agent}] Email sended...`);
+
     return NextResponse.json({ status: "ok" });
   }
   catch (err) {