Opening DOCKERFILE Files

The DOCKERFILE file type is primarily associated with Docker.

DOCKERFILE	File extension: DOCKERFILE
	File type:	script file

What is a DOCKERFILE file?

DOCKERFILE files mostly belong to Docker. DOCKERFILE files are plain text files that serve as a recipe for building Docker container images.
They list a series of instructions that the Docker engine follows to create a custom image. These instructions include commands like:

FROM: Specify the base image

RUN: Execute commands during the build

COPY: Add files into the image

This file format is used in automated build processes and container deployment workflows. It is not a binary file but a script that is read by the Docker engine.
You can open and edit these files using any text editor, such as VS Code or Notepad++.
FilExt.com note: For more details, see the official Dockerfile Reference.

How to open DOCKERFILE files

You need a suitable software like Docker to open a DOCKERFILE file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your DOCKERFILE file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a DOCKERFILE file directly in the browser:. Just drag the file onto this browser window and drop it.

Online DOCKERFILE Text Viewer

Choose your .dockerfile file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert DOCKERFILE files:

Docker
See the previous paragraphs to learn more about the main application. DOCKERFILE files are often referred to as Docker developers because this type of file is primarily created or used by this software.
Docker
A *.DOCKERFILE file is a text document that contains all the instructions a user could call on the command line to assemble a Docker image. Using docker build, users can create an automated build that executes several command-line instructions in succession. Each instruction creates one layer in the image. When users change the DOCKERFILE and rebuild the image, Docker reuses layers from the previous build where possible, making the process much faster. This file format is classified as Configuration file.

Technical Data for DOCKERFILE File Extension

File classification:

Developer

Related files:

dockerignore, env, yml, yaml, sh, pcapng, file, txt, cid, imgsao, json

Mime type:

text/x-dockerfile, text/x-dockerfile-config

a dockerfile script file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with DOCKERFILE files

Associate the DOCKERFILE file extension with the correct application.
Update your software that should actually open script files. Because only the current version supports the latest DOCKERFILE file format. Search, therefore, e.g. on the manufacturer website after an available Docker update.
To make sure that your DOCKERFILE file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
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