What base images are supported?

Node.js (node:20-alpine), Python (python:3.12-slim), Go (golang:1.22-alpine with scratch final stage), Java (eclipse-temurin:21-jre-alpine), Rust (rust:alpine with scratch final stage), and .NET (mcr.microsoft.com/dotnet/aspnet).

What best practices does the generated Dockerfile follow?

Multi-stage builds to keep the final image small, a dedicated non-root user for security, explicit COPY before RUN to maximise layer cache, and a HEALTHCHECK instruction for container orchestrators.

Can I add environment variables?

Yes — enter key=value pairs in the env vars field and they are added as ENV instructions in the Dockerfile. Sensitive secrets should use Docker secrets or runtime injection instead.

Dockerfile Generator

Generate a production-ready multi-stage Dockerfile by selecting base image, port, and entry command.

Base image / runtime

Exposed port

Entry command (optional)

Environment variables (KEY=VALUE, one per line)

$Dockerfile[DONE]

lines

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FAQ

What base images are supported?: Node.js (node:20-alpine), Python (python:3.12-slim), Go (golang:1.22-alpine with scratch final stage), Java (eclipse-temurin:21-jre-alpine), Rust (rust:alpine with scratch final stage), and .NET (mcr.microsoft.com/dotnet/aspnet).
What best practices does the generated Dockerfile follow?: Multi-stage builds to keep the final image small, a dedicated non-root user for security, explicit COPY before RUN to maximise layer cache, and a HEALTHCHECK instruction for container orchestrators.
Can I add environment variables?: Yes — enter key=value pairs in the env vars field and they are added as ENV instructions in the Dockerfile. Sensitive secrets should use Docker secrets or runtime injection instead.

Choose a base image (Node.js, Python, Go, Java, Rust, .NET), set your entry command, exposed port, and any environment variables. Get a multi-stage Dockerfile following best practices: non-root user, minimal final image, layer caching, and HEALTHCHECK. Copy or download the result.