Add `exec` option (for composer)

README.md

@@ -18,10 +18,11 @@
 - **host** (default: `swarm.autonomic.zone`): Host to deploy to (don't include `ssh://`)
 - **port** (default: `222`): SSH port to connect to
 - **user** (default: `drone`): System user to connect via SSH with
+- **exec** (default: none): Run a command in the container after copying
 
 ### Makes me sad they exist
 
-- **chdir** (default: none): Add `-C` option to `tar`
+- **chdir** (default: none): Add `-C` option to `tar`; i.e. change to a directory first
 
 ## Example
 

plugin.sh

@@ -31,6 +31,7 @@ output_versions(){
 
 run_docker_cp() {
   echo "--- start deploy ---"
+
   CONTAINER=$(docker -H "$REMOTE_DOCKER_HOST" container ls \
     --format "table {{.ID}},{{.Names}}" \
     | grep "${PLUGIN_SERVICE}" | cut -d',' -f1)
@@ -48,9 +49,13 @@ run_docker_cp() {
   echo "Copying $PLUGIN_SOURCE"
   # shellcheck disable=SC2086
   tar cf - $CD $PLUGIN_SOURCE | docker -H "$REMOTE_DOCKER_HOST" cp - $CONTAINER:$PLUGIN_DEST
+  
+  if [ -n "$PLUGIN_EXEC" ]; then
+    docker -H "$REMOTE_DOCKER_HOST" exec "$CONTAINER" sh -c "$PLUGIN_EXEC"
+  fi
+
   echo "--- end deploy ---"
 }
-
 run_plugin() {
   echo "--- start docker-cp-deploy ---"
   load_deploy_key