Init commit

Author: PeterDaveHello

.travis.yml

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+---
+
+dist: bionic
+
+services:
+  - docker
+
+stages:
+  - Static test
+  - Build test
+
+jobs:
+  include:
+    - stage: Static test
+      env:
+        - Test: hadolint
+      language: minimal
+      script:
+        - docker run --rm -i hadolint/hadolint < Dockerfile
+
+    - stage: Static test
+      env:
+        - Test: dockerfile_lint
+      language: node_js
+      node_js:
+        - "8"
+      script:
+        - npx --cache .npx dockerfile_lint
+      cache:
+        directories:
+          - .npx
+
+    - stage: Build test
+      language: minimal
+      before_script:
+        - LATEST_JSONLINT="$(curl https://registry.npmjs.org/jsonlint -so- | jq -r '.["dist-tags"].latest')"
+        - export LATEST_JSONLINT
+      script:
+        - docker build --build-arg JSONLINT_VERSION="$LATEST_JSONLINT" -t docker-jsonlint:$TRAVIS_COMMIT .
+      after_success:
+        - docker run --rm docker-jsonlint:$TRAVIS_COMMIT jsonlint --help

Dockerfile

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+FROM node:12-alpine
+
+ARG JSONLINT_VERSION
+ENV npm_config_loglevel=silent
+
+LABEL name="docker-jsonlint"
+LABEL maintainer="Peter Dave Hello <hsu@peterdavehello.org>"
+
+LABEL version="$JSONLINT_VERSION"
+
+WORKDIR /json
+
+RUN npm install -g jsonlint@"$JSONLINT_VERSION" && \
+	rm -rf ~/.npm && \
+	jsonlint --help

README.md

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+# docker-jsonlint
+
+[![Build Status](https://travis-ci.com/PeterDaveHello/docker-jsonlint.svg?branch=master)](https://travis-ci.com/PeterDaveHello/docker-jsonlint)
+[![Docker Hub pulls](https://img.shields.io/docker/pulls/peterdavehello/jsonlint.svg)](https://hub.docker.com/r/peterdavehello/jsonlint/)
+[![Docker image layers](https://images.microbadger.com/badges/image/peterdavehello/jsonlint.svg)](https://microbadger.com/images/peterdavehello/jsonlint/)
+[![Docker image version](https://images.microbadger.com/badges/version/peterdavehello/jsonlint.svg)](https://hub.docker.com/r/peterdavehello/jsonlint/tags/)
+
+[![Docker Hub badge](http://dockeri.co/image/peterdavehello/jsonlint)](https://hub.docker.com/r/peterdavehello/jsonlint/)
+
+Dockerized [jsonlint](https://github.com/zaach/jsonlint) with various versions, easy to use and easy to integrate with CI.
+
+## Table of Contents
+
+- [Usage](#usage)
+  - [Command line](#command-line)
+    - [Use latest version](#use-latest-version)
+    - [Use specific version](#use-specific-version)
+  - [Continuous Integration (CI)](#continuous-integration-ci)
+    - [Travis CI](#travis-ci)
+    - [GitLab CI](#gitlab-ci)
+- [jsonlint cli usage](#jsonlint-cli-usage)
+- [Build](#build)
+
+## Usage
+
+### Command line
+
+#### Use latest version
+
+```sh
+docker run --rm -v $PATH_TO_JSON:/json peterdavehello/jsonlint jsonlint -q JSON_FILE.json
+
+# Please replace "$PATH_TO_JSON" with your custom path,
+# and replace "JSON_FILE.json" with your real json file filename.
+```
+
+#### Use specific version
+
+Just like above, but you can specify version of jsonlint, for example:
+
+```sh
+docker run --rm -v $PATH_TO_JSON:/json peterdavehello/jsonlint:1.6.3 jsonlint -q JSON_FILE.json
+
+# Please replace "1.6.3" with the version number you want.
+# Don't forget to replace "$PATH_TO_JSON" & "JSON_FILE.json".
+```
+
+### Continuous Integration (CI)
+
+#### Travis CI
+
+Enable Docker service in your `.travis.yml`:
+
+```yaml
+services:
+  - docker
+```
+
+And use the same command in the `scripts` part as the command line mentions, for example:
+
+```yaml
+services:
+  - docker
+
+scripts:
+  - docker run --rm -v $TRAVIS_BUILD_DIR:/json peterdavehello/jsonlint:1.6.3 jsonlint -q example.json
+```
+
+This will lint a example json file called `example.json`
+
+#### GitLab CI
+
+Add this block to your `.gitlab-ci.yml`:
+
+```yaml
+jsonlint:
+  stage: lint
+  variables:
+    jsonlint_version: "1.6.3"
+  image: peterdavehello/jsonlint:$jsonlint_version
+  only:
+    changes:
+      - "**/*.json"
+  script:
+    - find . -name "*.json" | xargs -n 1 jsonlint -q
+```
+
+Replace "1.6.3" with the version you want to use, you can also use "latest" for the very new version.
+
+## jsonlint cli usage
+
+Just pass `-h`/`--help` to jsonlint to get its help message, for example:
+
+```sh
+$ docker run --rm peterdavehello/jsonlint jsonlint --help
+
+Usage: jsonlint [file] [options]
+
+file     file to parse; otherwise uses stdin
+
+Options:
+   -v, --version            print version and exit
+   -s, --sort-keys          sort object keys
+   -i, --in-place           overwrite the file
+   -t CHAR, --indent CHAR   character(s) to use for indentation  [  ]
+   -c, --compact            compact error display
+   -V, --validate           a JSON schema to use for validation
+   -e, --environment        which specification of JSON Schema the validation file uses  [json-schema-draft-03]
+   -q, --quiet              do not print the parsed json to STDOUT  [false]
+```
+
+For more details, check out the [jsonlint project](https://github.com/zaach/jsonlint) page.
+
+## Build
+
+Build command, you need to specify a valid jsonlint version argument to `jsonLINT_VERSION`:
+
+```sh
+docker build --build-arg JSONLINT_VERSION="1.6.3" -t docker-jsonlint .
+
+# Replace "docker-jsonlint" with the preferred image name
+```
+
+You can find a valid version on [jsonlint](https://www.npmjs.com/package/jsonlint?activeTab=versions) npm registry page, or just poke the [registry](https://registry.npmjs.org/jsonlint) to retrieve more details.

hooks/build

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+#!/bin/sh
+
+if [ "latest" = "$DOCKER_TAG" ]; then
+    DOCKER_TAG=$(curl https://registry.npmjs.org/jsonlint -sLo- | grep -Po '"latest":"\d+\.\d+\.\d+"' | awk -F'"' '{print $4}')
+fi
+
+docker build --build-arg JSONLINT_VERSION="$DOCKER_TAG" -f "$DOCKERFILE_PATH" -t "$IMAGE_NAME" .