Configure a new demo app to run in docker compose.

This uses the local version of elasticgraph to generate a
demo application in a docker container. The docker compose
file starts up the demo app & the related opensearch
dependency.

By Default the app will be avaiable on port 9393

.dockerignore

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+# Mac OSX file.
+.DS_Store
+/*/.DS_Store
+
+#Git
+/.git/*
+
+# Documentation
+*.md
+
+# Ignore log and temp files.
+/log/*
+/tmp/*
+/*/log/*
+/*/tmp/*
+
+# Ignore dockerfile
+Dockerfile

.env

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+OPENSEARCH_VERSION=2.18.0
+ENV=local
+ELASTICGRAPH_PORT=9393

Dockerfile

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+ARG PORT=9393
+ARG RUBY_VERSION=3.4
+
+# Use Ruby 3.x as the base image
+FROM ruby:${RUBY_VERSION}
+
+# Set working directory
+WORKDIR /app
+
+# Copy the entire project
+COPY . .
+
+
+# Retain just the files needed for building
+RUN find . \! -name "Gemfile" \! -name "*.gemspec" -mindepth 2 -maxdepth 2 -print | xargs rm -rf
+RUN find . \! -name "Gemfile*" \! -name "*.gemspec"  -maxdepth 1 -type f | xargs rm
+
+# Also need the version file. add it back
+COPY elasticgraph-support/lib/elastic_graph/version.rb ./elasticgraph-support/lib/elastic_graph/version.rb
+
+
+# Use Ruby 3.x as the base image
+FROM ruby:${RUBY_VERSION}
+
+WORKDIR /app/elasticgraph
+
+
+# Copy files from the first build stage.
+COPY --from=0 /app .
+
+# Install Ruby dependencies
+RUN bundle install
+
+# Copy the entire project
+COPY . .
+
+# Running the new command will commit to git. Setup defaults
+RUN git config --global user.email "[email protected]"
+RUN git config --global user.name "Demo User"
+
+# Use the elasticgraph gem local to the container
+RUN sed -i 's|"#{VERSION}"|path: \"/app/elasticgraph\"|g' elasticgraph/lib/elastic_graph/cli.rb
+
+
+# Why does this need to run a second time?
+RUN bundle install
+
+WORKDIR /app
+
+# Create demo app using the locally build elasticgraph project
+RUN BUNDLE_GEMFILE=/app/elasticgraph/Gemfile bundle exec elasticgraph new demo
+
+
+# Change work directory into the demo app
+WORKDIR /app/demo
+
+# Reference OpenSearch from the docker container
+RUN sed -i 's/localhost:9293/opensearch:9200/g' config/settings/local.yaml
+
+
+# Generate fake data and boot the graphiql api
+CMD ["bundle", "exec", "rake", "index_fake_data:artists" ,"boot_graphiql[${PORT},--host=0.0.0.0,true]"]

docker-compose.yaml

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+---
+networks:
+  default:
+    name: opensearch
+    external: false
+services:
+  opensearch:
+    build:
+      context: ./elasticgraph-local/lib/elastic_graph/local/opensearch/.
+      dockerfile: Dockerfile
+      args:
+        VERSION: 2.18.0
+    container_name: opensearch-2.18.0-${ENV}
+    healthcheck:
+      interval: 10s
+      retries: 80
+      test: curl --write-out 'HTTP %{http_code}' --fail --silent --output /dev/null http://localhost:9200/
+    environment:
+    # Note: we use `discovery.type=single-node` to ensure that the OpenSearch node does not
+    # try to join a cluster (or let another node join it). This prevents problems when you
+    # have multiple projects using elasticgraph-local at the same time. You do not want
+    # their OpenSearch nodes to try to join into a single cluster.
+    - discovery.type=single-node
+    # recommended by https://opensearch.org/downloads.html#minimal
+    - bootstrap.memory_lock=true
+    # We don't want OpenSearch to block writes when the disk allocation passes a threshold for our local/test
+    # OpenSearch we run using this docker setup.
+    # https://stackoverflow.com/a/75962819
+    #
+    # Without this, I frequently get `FORBIDDEN/10/cluster create-index blocked (api)` errors when running tests.
+    - cluster.routing.allocation.disk.threshold_enabled=false
+    - OPENSEARCH_JAVA_OPTS=-Xms4g -Xmx4g
+    ulimits:
+      nofile:
+        soft: 65536
+        hard: 65536
+    volumes:
+    - opensearch:/usr/share/opensearch/data
+    ports:
+    - 9200:9200
+  dashboards:
+    build:
+      context: ./elasticgraph-local/lib/elastic_graph/local/opensearch/.
+      dockerfile: UI-Dockerfile
+      args:
+        VERSION: ${OPENSEARCH_VERSION}
+    container_name: dashboards-${OPENSEARCH_VERSION}-${ENV}
+    environment:
+    - OPENSEARCH_HOSTS=http://opensearch:9200
+    - DISABLE_SECURITY_DASHBOARDS_PLUGIN=true
+    ports:
+    - 5601:5601
+  elasticgraph:
+    build:
+      context: .
+      dockerfile: Dockerfile
+      args:
+        container_name: elasticgraph-${ENV}
+    environment:
+      - PORT=${ELASTICGRAPH_PORT}
+    ports:
+    - ${ELASTICGRAPH_PORT}:${ELASTICGRAPH_PORT}
+    depends_on:
+      opensearch:
+        condition: service_healthy
+volumes:
+  opensearch: