diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..2d78e7d
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,3 @@
+ask/target
+.git
+*.md
diff --git a/Dockerfile b/Dockerfile
index 1c49a55..93f066c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -30,9 +30,11 @@ WORKDIR /app
 
 COPY basedosdados.duckdb Caddyfile start.sh auth.py ./
 COPY ask/ ./ask/
-RUN cd ask && ~/.cargo/bin/cargo build --release && \
+RUN cd ask && /root/.cargo/bin/cargo build --release && \
     mv target/release/ask /app/ask && \
-    rm -rf target
+    rm -rf target && \
+    file /app/ask && \
+    ldd /app/ask || true
 RUN chmod +x start.sh /app/ask
 
 EXPOSE 8080