adds CI for docker and uses python 3.10

.github/workflows/build.yaml

@@ -0,0 +1,47 @@
+name: build
+on:
+  push:
+    branches:
+    - master
+    - issue-160
+
+    paths:
+    # Only rebuild website when apps have changed
+    - calrissian/**'
+    - .github/**
+    - Dockerfile
+
+jobs:
+
+  version:
+
+    runs-on: ubuntu-latest
+
+    outputs:
+
+      app-version: ${{ steps.set-version.outputs.version }}
+
+    steps:
+    - uses: actions/checkout@v2
+    - run: echo "APP_VERSION=$(python setup.py --version" >> $GITHUB_ENV
+    - run: echo app version is $APP_VERSION
+    - id: set-version
+      run: echo "::set-output name=version::$APP_VERSION"
+
+  container-build:
+
+    needs: version
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2   
+    - run: echo version ${{needs.version.outputs.app-version}}
+    - run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
+    - name: build & push image
+      run: |
+        IMAGE_ID=ghcr.io/Duke-GCB/calrissian/calrissian
+        docker build . --file Dockerfile --tag calrissian
+        docker tag calrissian $IMAGE_ID:${{needs.version.outputs.app-version}}
+        docker push $IMAGE_ID:${{needs.version.outputs.app-version}}
+

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.7
+FROM python:3.10
 LABEL maintainer="dan.leehr@duke.edu"
 
 # cwltool requires nodejs