try change image building to buildah

backend/Dockerfile.native

@@ -1,9 +1,8 @@
 # ---- Pull Maven from its official image (avoids microdnf under QEMU) ----
-FROM maven:3.9.9-eclipse-temurin-21 AS maven-dist
+FROM docker.io/library/maven:3.9.9-eclipse-temurin-21 AS maven-dist
 
 # ---- Build stage: GraalVM 25 + Maven ----
-ARG TARGETPLATFORM=linux/arm64
+FROM ghcr.io/graalvm/native-image-community:25 AS build
-FROM --platform=$TARGETPLATFORM ghcr.io/graalvm/native-image-community:25 AS build
 
 # Copy Maven from the official Maven image — no package installation needed
 COPY --from=maven-dist /usr/share/maven /opt/maven
@@ -19,8 +18,8 @@ RUN mvn -Pnative dependency:resolve dependency:resolve-plugins -q
 COPY src ./src
 RUN mvn -Pnative package -DskipTests
 
-# ---- Runtime stage: minimal ARM64 distroless ----
+# ---- Runtime stage: distroless with glibc + libz (required by GraalVM native binary) ----
-FROM --platform=$TARGETPLATFORM gcr.io/distroless/base-nossl-debian12
+FROM gcr.io/distroless/base-debian12
 COPY --from=build /app/target/ai-teacher-backend /app/ai-teacher-backend
 EXPOSE 8080
 ENTRYPOINT ["/app/ai-teacher-backend"]

backend/pom.xml

@@ -205,6 +205,15 @@
       <build>
         <plugins>
 
+          <!-- skip jib in native builds — use Dockerfile.native + buildah instead -->
+          <plugin>
+            <groupId>com.google.cloud.tools</groupId>
+            <artifactId>jib-maven-plugin</artifactId>
+            <configuration>
+              <skip>true</skip>
+            </configuration>
+          </plugin>
+
           <!-- GraalVM native-image compilation -->
           <plugin>
             <groupId>org.graalvm.buildtools</groupId>