feat: Change docker-compose.yml file (#3673)

* feat: Change `docker-compose.yml` file

* Add `volumes` to read from the local `/pipelines` folder
* Change the `PIPELINE_YAML_PATH` value and refer to the local `pipelines.haystack-pipeline.yml`
* Change the elasticsearch image

* Fix volume

* Update readme to direct users to the new demos repository

README.md

@@ -154,63 +154,7 @@ Ask any question on countries or capital cities and let Haystack return the answ
 
 **Local**
 
-Start up a Haystack service via [Docker Compose](https://docs.docker.com/compose/).
-With this you can begin calling it directly via the REST API or even interact with it using the included Streamlit UI.
-
-<details>
-  <summary>Click here for a step-by-step guide</summary>
-
-**1. Update/install Docker and Docker Compose, then launch Docker**
-
-```
-    apt-get update && apt-get install docker && apt-get install docker-compose
-    service docker start
-```
-
-**2. Clone Haystack repository**
-
-```
-    git clone https://github.com/deepset-ai/haystack.git
-```
-
-**3. Pull images & launch demo app**
-
-```
-    cd haystack
-    docker-compose pull
-    docker-compose up
-
-    # Or on a GPU machine: docker-compose -f docker-compose-gpu.yml up
-```
-
-You should be able to see the following in your terminal window as part of the log output:
-
-```
-..
-ui_1             |   You can now view your Streamlit app in your browser.
-..
-ui_1             |   External URL: http://192.168.108.218:8501
-..
-haystack-api_1   | [2021-01-01 10:21:58 +0000] [17] [INFO] Application startup complete.
-```
-
-**4. Open the Streamlit UI for Haystack by pointing your browser to the "External URL" from above.**
-
-You should see the following:
-
-![image](https://raw.githubusercontent.com/deepset-ai/haystack/main/docs/img/streamlit_ui_screenshot.png)
-
-You can then try different queries against a pre-defined set of indexed articles related to Game of Thrones.
-
-**Note**: The following containers are started as a part of this demo:
-
-* Haystack API: listens on port 8000
-* DocumentStore (Elasticsearch): listens on port 9200
-* Streamlit UI: listens on port 8501
-
-Please note that the demo will [publish](https://docs.docker.com/config/containers/container-networking/) the container ports to the outside world. *We suggest that you review the firewall settings depending on your system setup and the security guidelines.*
-
-</details>
+To run the Explore The World demo on your own machine and customize it to your needs, check out the instructions on [Explore the World repository](https://github.com/deepset-ai/haystack-demos/tree/main/explore_the_world) on GitHub.
 
 ## :vulcan_salute: Community
 

docker-compose.yml

@@ -3,23 +3,21 @@ services:
   haystack-api:
     # Pull Haystack's latest commit
     image: "deepset/haystack:cpu-main"
+    volumes:
+      - ./rest_api/rest_api/pipeline:/opt/pipelines
     ports:
       - 8000:8000
     restart: on-failure
     environment:
-      # See rest_api/pipeline/pipelines.haystack-pipeline.yml for configurations of Search & Indexing Pipeline.
       - DOCUMENTSTORE_PARAMS_HOST=elasticsearch
-      - PIPELINE_YAML_PATH=/opt/venv/lib/python3.10/site-packages/rest_api/pipeline/pipelines.haystack-pipeline.yml
-      - QUERY_PIPELINE_NAME=query
+      - PIPELINE_YAML_PATH=/opt/pipelines/pipelines.haystack-pipeline.yml
       - TOKENIZERS_PARALLELISM=false
     depends_on:
       elasticsearch:
         condition: service_healthy
 
   elasticsearch:
-    # This image is "ready-to-query" with some indexed articles
-    # about countries and capital cities from Wikipedia:
-    image: "deepset/elasticsearch-countries-and-capitals"
+    image: "docker.elastic.co/elasticsearch/elasticsearch:7.17.6"
     ports:
       - 9200:9200
     restart: on-failure
@@ -31,23 +29,3 @@ services:
         interval: 10s
         timeout: 1s
         retries: 10
-
-  ui:
-    depends_on:
-      - haystack-api
-    build:
-      context: ui
-      dockerfile: Dockerfile
-    ports:
-      - 8501:8501
-    restart: on-failure
-    environment:
-      - API_ENDPOINT=http://haystack-api:8000
-      - EVAL_FILE=ui/eval_labels_example.csv
-      # The value of the following variables will be read from the host, if present.
-      # They can also be temporarily set for docker-compose, for example:
-      # DISABLE_FILE_UPLOAD=1 DEFAULT_DOCS_FROM_RETRIEVER=5 docker-compose up
-      - DISABLE_FILE_UPLOAD
-      - DEFAULT_QUESTION_AT_STARTUP
-      - DEFAULT_DOCS_FROM_RETRIEVER
-      - DEFAULT_NUMBER_OF_ANSWERS