WhaleLint 
Disclaimer: this has started out as a pet-project while learning Golang.
Dockerfile linter written in Go.
It provides static analysis for Dockerfiles, identifying common mistakes and promotes best practices.
Sample output
Rules
Each Dockerfile AST element has a corresponding set of rules. Click on the picture for details.
Development
Roadmap
| Feature | Status | |
|---|---|---|
| Extendable ruleset |  |
|
| CLI | |
|
| Configurable Output | |
|
| - JSON | |
|
| - Colored Summary | |
|
| Docker image | |
|
| Rule pass |  |
|
| - Per line | |
|
| - Config file | |
|
| Config file | |
|
| - Rule profiles | |
|
| IDE plugins/extensions |  |
|
| - VSCode |  |
|
| - JetBrains | |
Design Decisions
A collection of documents describing the thought process behind selected design decisions. Link >
Contribution Guide
Docker Image
docker pull cremindes/whalelint:[tag]
docker run --rm -v $(pwd)/Dockerfile:/Dockerfile cremindes/whalelint:[tag] DockerfilePlugins
JetBrains
*Note: make sure, to also install the Docker plugin in case it's not bundled with the IDE.
VSCode
