Merge pull request #136 from whoan/issue-133

Use context input as a prefix for the context from compose services

README.md

@@ -34,6 +34,8 @@ or
 - **image_tag**: Tag(s) of the image. Allows multiple comma-separated tags (e.g. `one,another`) (default: `latest`).  
   If you set **compose_file** and the image(s) already has/have a tag, this is ignored.
 
+- **context**: Docker context (default: `./`). If a **compose_file** is provided, it will be the context prefixed to any additional context read from the compose file. Look at #133 for more details.
+
 - **registry**: Docker registry (default: *Docker Hub's registry*). You need a registry to use the cache functionality.
 
 - **username**: Docker registry's user (needed to push images, or to pull from a private repository).
@@ -70,8 +72,6 @@ or
 
 - **image_name**
 
-- **context**: Docker context (default: `./`).
-
 - **dockerfile**: Dockerfile filename path (default: `"$context"/Dockerfile`).
 
 ## Outputs

entrypoint.sh

@@ -15,6 +15,7 @@ fi
 
 merged_compose=/tmp/merged-compose.yml
 original_INPUT_IMAGE_TAG=$INPUT_IMAGE_TAG
+original_INPUT_CONTEXT=$INPUT_CONTEXT
 
 build_from_compose_file() {
    echo -e "\nBuilding from Compose file(s)"
@@ -103,7 +104,7 @@ _set_variables() {
   fi
 
   INPUT_CONTEXT=$(_get_context_by_service_name "$service_name")
-  INPUT_CONTEXT=${INPUT_CONTEXT:-.}
+  INPUT_CONTEXT=$original_INPUT_CONTEXT/${INPUT_CONTEXT:-.}
 
   INPUT_DOCKERFILE=$(_get_dockerfile_by_service_name "$service_name")
   INPUT_DOCKERFILE=${INPUT_DOCKERFILE:-Dockerfile}