deploy: exec java in container entrypoint

modules/apps/vehicle-history-app/src/test/java/com/lingniu/ingest/historyapp/PortainerComposeResourceLimitsTest.java

@@ -47,6 +47,15 @@ class PortainerComposeResourceLimitsTest {
                 .contains("JAVA_OPTS: ${JAVA_OPTS:---sun-misc-unsafe-memory-access=allow -XX:+UseZGC -XX:MaxRAMPercentage=75}");
     }
 
+    @Test
+    void dockerEntrypointExecsJavaForSignalHandling() throws IOException {
+        String dockerfile = Files.readString(repositoryRoot().resolve("Dockerfile"));
+
+        assertThat(dockerfile)
+                .contains("ENTRYPOINT [\"sh\", \"-c\", \"exec java $JAVA_OPTS -jar /app/app.jar\"]")
+                .doesNotContain("\"java $JAVA_OPTS -jar /app/app.jar\"");
+    }
+
     @Test
     void gb32960ComposeExposesBothPlatformAccountsWithoutSecrets() throws IOException {
         String compose = Files.readString(repositoryRoot().resolve("deploy/portainer/docker-compose.yml"));