Initial commit of vector database example with new embeddings

examples/vector_databases/weaviate/docker-compose.yaml

@@ -0,0 +1,20 @@
+version: '3.4'
+services:
+  weaviate:
+    image: semitechnologies/weaviate:1.14.0
+    restart: on-failure:0
+    ports:
+     - "8080:8080"
+    environment:
+      QUERY_DEFAULTS_LIMIT: 20
+      AUTHENTICATION_ANONYMOUS_ACCESS_ENABLED: 'true'
+      PERSISTENCE_DATA_PATH: "./data"
+      DEFAULT_VECTORIZER_MODULE: text2vec-transformers
+      ENABLE_MODULES: text2vec-transformers
+      TRANSFORMERS_INFERENCE_API: http://t2v-transformers:8080
+      CLUSTER_HOSTNAME: 'node1'
+  t2v-transformers:
+    image: semitechnologies/transformers-inference:sentence-transformers-msmarco-distilroberta-base-v2
+    environment:
+      ENABLE_CUDA: 0 # set to 1 to enable
+      # NVIDIA_VISIBLE_DEVICES: all # enable if running with CUDA