Build all versions in GH Action

.github/workflows/ci.yml

@@ -8,7 +8,24 @@ jobs:
 
     runs-on: ubuntu-latest
 
+    strategy:
+      matrix:
+        version:
+          - 0.19.0.1
+          - 0.18.1
+          - 0.18.0
+          - 0.17.2
+          - 0.17.1
+          - 0.17.0.1
+          - 0.17.0
+          - 0.16.3
+          - 0.15.2
+          - 0.14.3
+          - 0.13.2
+          - 0.13.1
+          - 0.13.0
+
     steps:
     - uses: actions/checkout@v1
     - name: Build the Docker image
-      run: docker build -t lukechilds/bitcoind .
+      run: docker build --build-arg VERSION=${{ matrix.version }} -t lukechilds/bitcoind:v${{ matrix.version }} .