multiline support

README.md

@@ -11,7 +11,17 @@ Docker already supports running commands inside a docker image. See [jobs.<jobs_
 - uses: addnab/docker-run-action@v1
   with:
     image: docker:latest
-    command: echo "hello world"
+    run: echo "hello world"
+```
+
+#### Multiple commands
+```yaml
+- uses: addnab/docker-run-action@v1
+  with:
+    image: docker:latest
+    run: |
+      echo "first line"
+      echo "second line"
 ```
 
 ### Supported Inputs

action.yml

@@ -8,8 +8,8 @@ inputs:
   options:
     description: 'Options'
     required: false
-  command:
-    description: 'Command'
+  run:
+    description: 'Run command in container'
     required: false
   registry:
     description: 'Registry'

entrypoint.sh

@@ -4,4 +4,6 @@ if [ ! -z $INPUT_USERNAME ];
 then echo $INPUT_USERNAME | docker login $INPUT_REGISTRY -u $INPUT_PASSWORD --password-stdin
 fi
 
-exec docker run $INPUT_OPTIONS $INPUT_IMAGE $INPUT_COMMAND
+echo "$INPUT_COMMAND" | sed -e 's/\\n/;/g' > semicolon_delimited_script
+
+exec docker run $INPUT_OPTIONS $INPUT_IMAGE /bin/sh -c "`cat semicolon_delimited_script`"