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Hello World Example
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Hello World Example

Hello World Example

apify/hello-world
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The simplest Actor you will see today. It takes a greeting message on input, prints it, and stores a new message as the output. That's all.

Dockerfile

1# This is a template for a Dockerfile used to run acts in Actor system.
2# The base image name below is set during the act build, based on user settings.
3# IMPORTANT: The base image must set a correct working directory, such as /usr/src/app or /home/user
4FROM apify/actor-node-basic:v0.21.10
5
6# Second, copy just package.json and package-lock.json since it should be
7# the only file that affects "npm install" in the next step, to speed up the build
8COPY package*.json ./
9
10# Install NPM packages, skip optional and development dependencies to
11# keep the image small. Avoid logging too much and print the dependency
12# tree for debugging
13RUN npm --quiet set progress=false \
14 && npm install --only=prod --no-optional \
15 && echo "Installed NPM packages:" \
16 && (npm list --all || true) \
17 && echo "Node.js version:" \
18 && node --version \
19 && echo "NPM version:" \
20 && npm --version
21
22# Copy source code to container
23# Do this in the last step, to have fast build if only the source code changed
24COPY  . ./
25
26# NOTE: The CMD is already defined by the base image.
27# Uncomment this for local node inspector debugging:
28# CMD [ "node", "--inspect=0.0.0.0:9229", "main.js" ]

package.json

1{
2    "name": "apify-project",
3    "version": "0.0.1",
4    "description": "",
5    "author": "It's not you it's me",
6    "license": "ISC",
7    "dependencies": {
8        "apify": "0.21.10"
9    },
10    "scripts": {
11        "start": "node main.js"
12    }
13}

main.js

1const Apify = require('apify');
2
3Apify.main(async () => {
4    // Get input of your act and print it
5    const input = await Apify.getValue('INPUT');
6    console.log('My input:');
7    console.dir(input);
8
9    // Save the output
10    const output = {
11        message: "Hello world!"
12    };
13    await Apify.setValue('OUTPUT', output);
14});
Developer
Maintained by Apify
Actor metrics
  • 18 monthly users
  • 99.8% runs succeeded
  • 0.0 days response time
  • Created in Sep 2017
  • Modified 2 months ago