fix(docker): standardize Dockerfile and entrypoint filenames; add GPU-specific Dockerfiles and update build and test references

test/helpers/docker.ts

@@ -49,7 +49,7 @@ export const IMAGES = {
 
   minicpm: {
     name: 'minicpm45v',
-    dockerfile: 'Dockerfile_minicpm45v',
+    dockerfile: 'Dockerfile_minicpm45v_gpu',
     buildContext: '.',
     containerName: 'minicpm-test',
     ports: ['11434:11434'],