Installing Aspose.Slides for Node.js via Java Using Docker

Prerequisites:

• Install Docker on your machine. You can follow the official installation guide here.

Steps:

1. Create Dockerfile

Create a new file named Dockerfile in your project directory with the following content:

# Use Ubuntu 20.04 as the base image
FROM ubuntu:20.04

# Update the package list and install essential packages for adding repositories and downloading files
RUN apt-get update && \
   apt-get install -y curl gnupg2 software-properties-common && \
   rm -rf /var/lib/apt/lists/*

# Install Node.js version 18.x from Nodesource repository
RUN curl -fsSL https://deb.nodesource.com/setup_18.x | bash - && \
   apt-get install -y nodejs && \
   rm -rf /var/lib/apt/lists/*

# Install Python 2.x, which is required by some npm packages like node-gyp
RUN apt-get update && \
   apt-get install -y python2 && \
   rm -rf /var/lib/apt/lists/*

# Install OpenJDK 11, which is required by Aspose.Slides for Java dependencies
RUN apt-get update && \
   apt-get install -y openjdk-11-jdk && \
   rm -rf /var/lib/apt/lists/*

# Install build-essential package, which includes tools like 'make' required for building native modules
RUN apt-get update && \
   apt-get install -y build-essential && \
   rm -rf /var/lib/apt/lists/*

# Install node-gyp globally, a tool used to compile native add-ons for Node.js
RUN npm install -g node-gyp

# Set the working directory inside the container to /app
WORKDIR /app

# Create package.json file with necessary details and dependencies
RUN echo '{\n\
  "name": "aspose-slides-app",\n\
  "version": "1.0.0",\n\
  "main": "index.js",\n\
  "scripts": {\n\
   "start": "node index.js"\n\
  },\n\
  "dependencies": {\n\
   "aspose.slides.via.java": "^25.1.0"\n\
  }\n\
}' > package.json

# Create index.js file with sample code to create a presentation using Aspose.Slides
RUN echo 'const slides = require("aspose.slides.via.java");\n\
var presentation = new slides.Presentation();\n\
var slide = presentation.getSlides().get_Item(0);\n\
slide.getShapes().addAutoShape(slides.ShapeType.Line, 50, 150, 300, 0);\n\
presentation.save("./NewPresentation.pptx", slides.SaveFormat.Pptx);\n\
console.log("Script completed, please check file /app/NewPresentation.pptx!");' > index.js

# Install the Aspose.Slides via Java package specified in package.json
RUN npm install aspose.slides.via.java

# Set the default command to run the application when the container starts
CMD ["node", "index.js"]

2. Build Docker Image

Run the following command in the directory where your Dockerfile is located to build the Docker image:

docker build -t aspose-slides-nodejs .

3. Run Docker Container

Run the container and save its ID:

CONTAINER_ID=$(docker create aspose-slides-nodejs)
docker start -a $CONTAINER_ID

4. Access Aspose.Slides in Docker

After starting the container, the script will generate a PPTX file. You can find the generated output file NewPresentation.pptx in the /app folder inside the container:

docker cp $CONTAINER_ID:/app/NewPresentation.pptx ./NewPresentation.pptx

Remove the temporary container:

docker rm $CONTAINER_ID