switch from travis ci to github actions

Author: Armin Schrenk

.github/workflows/build.yml

@@ -0,0 +1,63 @@
+name: Build
+
+on:
+  [push]
+
+jobs:
+  build:
+    name: Build and Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-java@v1
+        with:
+          java-version: 14
+      - uses: actions/cache@v1
+        with:
+          path: ~/.m2/repository
+          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            ${{ runner.os }}-maven-
+      - name: Ensure to use tagged version
+        run: mvn versions:set --file ./pom.xml -DnewVersion=${GITHUB_REF##*/} # use shell parameter expansion to strip of 'refs/tags'
+        if: startsWith(github.ref, 'refs/tags/')
+      - name: Build and Test
+        run: mvn -B install
+      - name: Upload cryptomator-cli-XXX.jar
+        uses: actions/upload-artifact@v1
+        with:
+          name: cryptomator-cli.jar
+          path: target/cryptomator-cli-*.jar
+
+  release:
+    name: Draft a Release on GitHub Releases
+    runs-on: ubuntu-latest
+    needs: build
+    if: startsWith(github.ref, 'refs/tags/')
+    steps:
+      - name: Download cryptomator-cli.jar
+        uses: actions/download-artifact@v1
+        with:
+          name: cryptomator-cli.jar
+          path: .
+      - name: Create Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: ${{ github.ref }}
+          body: |
+            :construction: Work in Progress
+          draft: true
+          prerelease: false
+      - name: Upload cryptomator-cli.jar to GitHub Releases
+        uses: actions/upload-release-asset@v1.0.1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: cryptomator-cli.jar
+          asset_name: cryptomator-cli-${{ github.ref }}.jar
+          asset_content_type: application/jar

.travis.yml

@@ -1,4 +1,4 @@
-[![Build Status](https://travis-ci.org/cryptomator/cli.svg?branch=develop)](https://travis-ci.org/cryptomator/cli)
+[![Build](https://github.com/cryptomator/cli/workflows/Build/badge.svg)](https://github.com/cryptomator/cli/actions?query=workflow%3ABuild)
 [![Latest Release](https://img.shields.io/github/release/cryptomator/cli/all.svg)](https://github.com/cryptomator/cli/releases/latest)
 
 # Cryptomator CLI