First Commit

Dockerfile

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+
+FROM alpine:3.10
+COPY entrypoint.sh /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]

README.md

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 # lerna-get-version-action
 Github Action for Retrieving Version from lerna.json
+
+This GitHub Action retrieves the version from the lerna.json file and sets the version in the `lerna-version` output value usable in your workflow file.
+
+## Example
+
+To use this action in your project, use the following:
+
+```yaml
+- name: get-lerna-version
+  id: lerna-version
+  uses: saulonunesdev/lerna-get-version-action@master
+```
+
+The Action sets an output variable called `current-version` which can be used in a following step by using `${{ steps.package-version.outputs.lerna-version}}`.
+
+Based on: https://github.com/martinbeentjes/npm-get-version-action

action.yml

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+
+name: 'Get current lerna version'
+description: 'Get the current version of lerna.json'
+branding:
+  color: 'gray-dark'
+  icon: 'align-center'
+outputs:
+  lerna-version:
+    description: 'Current version defined in the lerna.json file'
+runs:
+  using: 'docker'
+  image: 'Dockerfile'

entrypoint.sh

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+
+#!/bin/sh -l
+
+LERNA_VERSION=$(grep -m1 version lerna.json | awk -F: '{ print $2 }' | sed 's/[", ]//g')
+
+echo ::set-output name=lerna-version::$LERNA_VERSION