Try other variation with quotes

action.yml

@@ -25,8 +25,14 @@ inputs:
     description: Use swarm mode instead of docker compose
     default: "false"
     required: true
+  custom_container_action:
+    description: "Run a custom action"
+    required: false
+  custom_container_action_target:
+    description: "Target container for action"
+    required: false
   action:
-    description: Action, i.e., "up" or "down"
+    description: Action, i.e., "up" or "down", or "custom"
     default: "up"
     required: true
   docker_compose_project:
@@ -49,3 +55,5 @@ runs:
     DOCKER_COMPOSE_FILENAME: ${{ inputs.docker_compose_filename }}
     DEPLOY_ACTION: ${{ inputs.action }}
     SWARM_MODE: ${{ inputs.swarm_mode }}
+    CUSTOM_ACTION: ${{ inputs.custom_container_action }}
+    CUSTOM_ACTION_TARGET: ${{ inputs.custom_container_action_target }}

entrypoint.sh

@@ -52,6 +52,9 @@ stack_down() {
     # It is not at all necessary to transfer and unpack the workspace here, but I'll do it anyway for simplicity's sake.
     echo "set -e ; log() { echo '>> [remote]' \$@ ; } ; cleanup() { log 'Removing workspace...'; rm -rf \"\$HOME/workspace\" ; } ; log 'Creating workspace directory...' ; mkdir -p \"\$HOME/workspace/$DOCKER_COMPOSE_PROJECT\" ; trap cleanup EXIT ; log 'Unpacking workspace...' ; tar -C \"\$HOME/workspace/$DOCKER_COMPOSE_PROJECT\" -xjv ; log 'Launching docker stack rm...' ; cd \"\$HOME/workspace/$DOCKER_COMPOSE_PROJECT\" ; docker stack rm \"$DOCKER_COMPOSE_PROJECT\""
 }
+custom_action() {
+    echo "set -e ; log() { echo '>> [remote]' \$@ ; } ; cleanup() { log 'Removing workspace...'; rm -rf \"\$HOME/workspace\" ; } ; log 'Creating workspace directory...' ; mkdir -p \"\$HOME/workspace\" ; trap cleanup EXIT ; log 'Unpacking workspace...' ; tar -C \"\$HOME/workspace\" -xjv ; log 'Launching docker compose...' ; cd \"\$HOME/workspace\" ; docker compose -f \"$DOCKER_COMPOSE_FILENAME\" -p \"$DOCKER_COMPOSE_PROJECT\" run --rm $CUSTOM_ACTION_TARGET $CUSTOM_ACTION"
+}
 
 deploy() {
     local remote_command
@@ -67,9 +70,19 @@ deploy() {
         if [ "$DEPLOY_ACTION" == "up" ]; then
             log "Deploying docker compose project ${DOCKER_COMPOSE_PROJECT}."
             remote_command=$(compose_up)
-        else
+        elif [ "$DEPLOY_ACTION" == "down" ]; then
             log "Removing docker compose project ${DOCKER_COMPOSE_PROJECT}."
             remote_command=$(compose_down)
+        elif [ "$DEPLOY_ACTION" == "custom" ]; then
+            if [ -z "$CUSTOM_ACTION" ] || [ -z "$CUSTOM_ACTION_TARGET" ]; then
+                echo "ERROR: You must set custom_container_action and custom_container_action_target"
+                exit 1
+            fi
+            log "Running custom action on project ${DOCKER_COMPOSE_PROJECT}:"
+            log "Action: ${CUSTOM_ACTION}"
+            log "Target: ${CUSTOM_ACTION_TARGET}"
+            remote_command=$(custom_action)
+
         fi
     fi
     ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \