Online Dockerfile Editor

Iterate on Dockerfile configuration with clear highlighting for ops and platform teams.

After editing, you can check structure in dockerfile validator.

Related technologies: Docker Compose, Kubernetes, multi-stage builds — see also YAML Editor, INI Editor, NGINX Editor.

Iterating on Dockerfile for services, pipelines, and platform changes with clear highlighting.

Treat Dockerfile like production config even in a draft: keep indentation consistent, quote values that need it, and avoid embedding secrets in samples you might share.

Name services and env keys the same way your repo already does so a downloaded file drops into CI without a rename pass. Comment only the non-obvious bits.

Watch trailing spaces and tab/space mixes—many deploy tools fail on whitespace that editors hide. Validate against a schema when your stack has one.

After editing, diff against the live file in git before apply. Validators or YAML/JSON tools on ConversionTab help when the config is data-shaped.

Stable link for this mode: /code-editor/dockerfile

Open this Dockerfile editor, paste or type in the Ace buffer, use find/replace and theme/font controls, then download when ready. Theme choices may stick in local storage on this device—it is not a cloud project.

Editing stays in your browser for normal use (no account required). Do not paste production secrets; save important work to your own repo or encrypted store.

Copy a starter into the editor, rename symbols to match your project, then download. These are teaching/review snippets—not a full app scaffold.

FROM golang:1.22 AS build
WORKDIR /src
COPY . .
RUN CGO_ENABLED=0 go build -o /out/app .

FROM gcr.io/distroless/static
COPY --from=build /out/app /app
ENTRYPOINT ["/app"]

# Dockerfile
app_name=demo
log_level=info
port=8080

server:
  host: 0.0.0.0
  port: 443
  tls: true

features:
  metrics: true
  beta_ui: false
limits:
  max_upload_mb: 25

Common Dockerfile patterns for variables, control flow, and comments. Adjust style to your team’s formatter before you commit.

ENV NODE_ENV=production

N/A — use RUN with shell loops sparingly

N/A — use ENTRYPOINT/CMD for process start

# line comment

ENV NODE_ENV=production
ENV PORT=3000

FROM builder AS build
COPY . .
RUN build

FROM runtime
COPY --from=build /out /app

Does Dockerfile run on ConversionTab servers?

No. Download the file and apply it through your deploy, CI, or config workflow.

Is my code uploaded while I type?

Normal editing stays in the browser. You do not need an account to draft or download.

Can I change theme and font size?

Yes—use the toolbar above the editor. Preferences can persist in local storage on this device.

When should I use an IDE instead?

Use your IDE for large projects, debugging, secrets, and production builds. This page is for short drafts and reviews.

Nearby editors and helpers for Dockerfile work—open one when you need a different highlighter, a validator, or a format tool after you download.

Code Editor · Dockerfile Validator · Apache Conf Editor · Gitignore Editor · Hjson Editor · INI Editor · NGINX Editor · Properties Editor · TOML Editor · YAML Editor · DOT Editor · Django Editor