docker: make deployment easier

docker-compose.yml

@@ -0,0 +1,64 @@
+## Example Docker Compose configuration
+##
+## Use this as a template to set up docker-compose, or as guide to set up other
+## orchestration services
+version: '2'
+
+services:
+  api:
+    build:
+      context: ./server
+    depends_on:
+      - sql
+      - elasticsearch
+    environment:
+      ## These should be the names of the dependent containers listed above,
+      ## or FQDNs/IP addresses if these services are running outside of Docker
+      POSTGRES_HOST: sql
+      ESEARCH_HOST: elasticsearch
+      ## Credentials for database:
+      POSTGRES_USER:
+      POSTGRES_PASSWORD:
+      ## Commented Values are Default:
+      #POSTGRES_DB: defaults to same as POSTGRES_USER
+      #POSTGRES_PORT: 5432
+      #ESEARCH_PORT: 9200
+      #ESEARCH_INDEX: szurubooru
+      #LOG_SQL: 0 (1 for verbose SQL logs)
+    volumes:
+      - "${MOUNT_DATA}:/data"
+      - "./server/config.yaml:/opt/app/config.yaml"
+  client:
+    build:
+      context: ./client
+      args:
+        BUILD_INFO:
+    depends_on:
+      - api
+    environment:
+      BACKEND_HOST: api
+    volumes:
+      - "${MOUNT_DATA}:/data:ro"
+    ports:
+      - "${PORT}:80"
+  sql:
+    image: postgres:alpine
+    restart: unless-stopped
+    environment:
+      POSTGRES_USER:
+      POSTGRES_PASSWORD:
+    volumes:
+      - "${MOUNT_SQL}:/var/lib/postgresql/data"
+  elasticsearch:
+    image: docker.elastic.co/elasticsearch/elasticsearch-oss:6.3.1
+    environment:
+      ## Specifies the Java heap size used
+      ## Read
+      ##  https://www.elastic.co/guide/en/elasticsearch/reference/current/docker.html
+      ## for more info
+      ES_JAVA_OPTS: -Xms512m -Xmx512m
+    volumes:
+      - index:/usr/share/elasticsearch/data
+
+volumes:
+  index: # Scratch space for ElasticSearch index, will be rebuilt if lost