deploy both from master and tagged commits

Author: Bram Ceulemans

.editorconfig

@@ -5,3 +5,6 @@ indent_style = space
 trim_trailing_whitespace = true
 insert_final_newline = true
 indent_size = 4
+
+[{*.yml, *.yaml}]
+indent_size = 2

.travis.yml

@@ -3,7 +3,7 @@ language: python
 cache: pip
 
 python:
-    - '3.8' # this should be in sync with the Dockerfile base image
+  - '3.8' # this should be in sync with the Dockerfile base image
 
 services:
   - docker
@@ -13,5 +13,11 @@ script:
   - docker build -t $IMAGE .
 
 deploy:
-  provider: script
-  script: .travis/docker-push.sh
+  - provider: script
+    script: .travis/docker-push.sh
+    on:
+      branch: 'master'
+  - provider: script
+    script: .travis/docker-push.sh
+    on:
+      tags: true