fix: Use the same entrypoint for custom docker images as for the other images (no-changelog) (#4849)

* ci: Use the same entrypoint for custom docker images as for the other images

* update docker-compose examples to use the correct volume paths to work with custom images

docker/images/n8n-custom/Dockerfile

@@ -22,11 +22,11 @@ RUN rm -rf patches .npmrc *.yaml node_modules/.cache packages/**/node_modules/.c
 # 2. Start with a new clean image with just the code that is needed to run n8n
 FROM n8nio/base:${NODE_VERSION}
 COPY --from=builder /home/node ./
-COPY docker/images/n8n-custom/docker-entrypoint.sh ./
+COPY docker/images/n8n-custom/docker-entrypoint.sh /
 
 RUN \
 	mkdir .n8n && \
 	chown node:node .n8n
 USER node
 ENV NODE_ENV=production
-ENTRYPOINT ["tini", "--", "./docker-entrypoint.sh"]
+ENTRYPOINT ["tini", "--", "/docker-entrypoint.sh"]