Ignore SSL issues with `axios` and docker | Import `https` package with docker

[LucBerge]

The problem

I have a complex code node which uses axios package. The axios package in already included in the n8n docker image. Everything is working fine until I faced a website without certificate. I need to ignore SSL issues with axios.

I found a simple solution:

const axios = require('axios');
const https = require('https');

const instance = axios.get("https://example.com", {
  httpsAgent: new https.Agent({  
    rejectUnauthorized: false
  })
});

I have a Dockerfile to create a custom n8n image:

FROM n8nio/n8n:latest
USER root
RUN npm install -g https puppeteer
USER node

I build my docker image with:

sudo docker build . -f Dockerfile -t custom-n8n

I run my container with:

-e NODE_FUNCTION_ALLOW_EXTERNAL="https,puppeteer"

The issue

When running the following code, axios and puppeteer packages are succesfully imported but https is not found:

const axios = require('axios');
const puppeteer= require('puppeteer');
const https = require('https');

The resolution

Solution 1
Regarding this comment, I can set env variable NODE_TLS_REJECT_UNAUTHORIZED to 0 but it applies to the entire container.

Solution 2
Use native fetch method with undici

Solution 3
Find a way to import https package.

The questions

1. How can we import https package ?
2. Can’t I import it because it is not compatible with Reactnative/Vuejs ?

Information on your n8n setup

• n8n version: 1.37.3
• Database: SQLite
• n8n EXECUTIONS_PROCESS setting: own
• Running n8n via Docker
• Operating system: Rasbian Lite 64bits

[n8n]

It looks like your topic is missing some important information. Could you provide the following if applicable.

• n8n version:
• Database (default: SQLite):
• n8n EXECUTIONS_PROCESS setting (default: own, main):
• Running n8n via (Docker, npm, n8n cloud, desktop app):
• Operating system:

[Jon]

Hey @LucBerge,

I don’t see why it wouldn’t work as we also use https in n8n, Have you tried adding it to the internal env option to see if that helps?

[LucBerge]

This is the full error message I have when importing https package:

VMError: Cannot find module '/usr/local/lib/node_modules/https'
    at LegacyResolver.loadAsPackage (/usr/local/lib/node_modules/n8n/node_modules/@n8n/vm2/lib/resolver.js:427:11)
    at LegacyResolver.loadAsDirectory (/usr/local/lib/node_modules/n8n/node_modules/@n8n/vm2/lib/resolver.js:439:15)
    at LegacyResolver.loadNodeModules (/usr/local/lib/node_modules/n8n/node_modules/@n8n/vm2/lib/resolver.js:457:13)
    at LegacyResolver.resolveFull (/usr/local/lib/node_modules/n8n/node_modules/@n8n/vm2/lib/resolver.js:310:12)
    at LegacyResolver.resolveFull (/usr/local/lib/node_modules/n8n/node_modules/@n8n/vm2/lib/resolver-compat.js:147:17)
    at LegacyResolver.resolve (/usr/local/lib/node_modules/n8n/node_modules/@n8n/vm2/lib/resolver.js:121:15)
    at resolve (/usr/local/lib/node_modules/n8n/node_modules/@n8n/vm2/lib/nodevm.js:317:21)
    at VM2 Wrapper.apply (/usr/local/lib/node_modules/n8n/node_modules/@n8n/vm2/lib/bridge.js:485:11)
    at requireImpl (/usr/local/lib/node_modules/n8n/node_modules/@n8n/vm2/lib/setup-node-sandbox.js:90:19)
    at require (/usr/local/lib/node_modules/n8n/node_modules/@n8n/vm2/lib/setup-node-sandbox.js:171:10)
    at /usr/local/lib/node_modules/n8n/node_modules/n8n-nodes-base/dist/nodes/Code:1:112
    at /usr/local/lib/node_modules/n8n/node_modules/n8n-nodes-base/dist/nodes/Code:4:2
    at VM2 Wrapper.apply (/usr/local/lib/node_modules/n8n/node_modules/@n8n/vm2/lib/bridge.js:485:11)
    at NodeVM.run (/usr/local/lib/node_modules/n8n/node_modules/@n8n/vm2/lib/nodevm.js:497:23)
    at JavaScriptSandbox.runCodeEachItem (/usr/local/lib/node_modules/n8n/node_modules/n8n-nodes-base/dist/nodes/Code/JavaScriptSandbox.js:97:45)
    at Object.execute (/usr/local/lib/node_modules/n8n/node_modules/n8n-nodes-base/dist/nodes/Code/Code.node.js:139:40)
    at Workflow.runNode (/usr/local/lib/node_modules/n8n/node_modules/n8n-workflow/dist/Workflow.js:728:42)
    at /usr/local/lib/node_modules/n8n/node_modules/n8n-core/dist/WorkflowExecute.js:660:68
    at /usr/local/lib/node_modules/n8n/node_modules/n8n-core/dist/WorkflowExecute.js:1062:20

[Jon]

Have you tried adding NODE_FUNCTION_ALLOW_BUILTIN and setting it to https?

[LucBerge]

 -e NODE_FUNCTION_ALLOW_BUILTIN="*" \
 -e NODE_FUNCTION_ALLOW_EXTERNAL="*" \

Setting to *, I won’t have import issues anymore…