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What is N8N? ​
N8N is an open-source workflow automation tool that allows you to connect different applications and services together. It is an open-source alternative to tools like Zapier or Make.
Screenshots ​

Extending n8n with custom dependencies ​
To extend n8n with custom dependencies, you can add them following the example below to your Dockerfile:
dockerfile
...
RUN apk add --no-cache ffmpeg
...Example Dockerfile ​
dockerfile
FROM n8nio/n8n:latest
# Switch to root user to install packages and modify system directories
USER root
# Install necessary system packages using apk
# build-base, python3-dev, geoip-dev are needed for potential native dependencies
# wget for downloading, git for source control (might be needed by Go), bash (useful shell)
RUN apk update && \
apk add --no-cache \
wget \
ffmpeg
ENV N8N_HOST=${SUBDOMAIN}.${DOMAIN_NAME}
ENV N8N_PORT=5678
ENV N8N_PROTOCOL=https
ENV NODE_ENV=production
ENV WEBHOOK_URL=https://${SUBDOMAIN}.${DOMAIN_NAME}/
# Switch back to the non-root user that n8n runs as (typically 'node')
USER node