Update Ubuntu to 20.04. Enable automated deployments. (#1)

.github/workflows/publish_dx.yml

@@ -0,0 +1,29 @@
+name: Publish DNAnexus app
+on:
+  release:
+    types: [released, edited]
+
+jobs:
+  push_to_DNAnexus:
+    name: Push app to DNAnexus
+    runs-on: ubuntu-latest
+    steps:
+      - 
+        name: Check out the repo
+        uses: actions/checkout@v2
+      -
+        name: Sanitize Version for Tagging
+        run: echo ${{ github.event.release.tag_name }} | sed 's/^v//' | (read; echo SHORT_VERSION=$REPLY) >> $GITHUB_ENV
+      -
+        name: Update DX version
+        run: sed -i.bak "s/STAR_SHORT_VERSION/${{ env.SHORT_VERSION }}/" dxapp.json
+      -
+        name: Install DX toolkit
+        run: pip3 install dxpy
+      -
+        name: Login to DNAnexus
+        run: dx login --noprojects --token ${{ secrets.DX_TOKEN }}
+      - 
+        name: Build and push
+        id: dx_build
+        run: bash ./build.sh --app ${{ env.SHORT_VERSION }} --publish

dxapp.json

@@ -2,10 +2,12 @@
   "summary": "stjude_star",
   "title": "STAR RNA Alignment (St. Jude)",
   "name": "stjude_star",
+  "version": "STAR_SHORT_VERSION",
   "runSpec": {
     "distribution": "Ubuntu",
-    "interpreter": "python2.7",
-    "release": "14.04",
+    "interpreter": "python3",
+    "release": "20.04",
+    "version": "0",
     "file": "src/code.py",
     "timeoutPolicy": {
       "*": {
@@ -77,7 +79,6 @@
       "help": "" 
     }
   ],
-  "version": "1.2.0",
   "regionalOptions": {
     "azure:westus": {
       "systemRequirments": {