docker: make deployment easier

.gitignore

@@ -1,5 +1,5 @@
 config.yaml
-docker-compose.yml
+.env
 */*_modules/
 .coverage
 .cache

INSTALL.md

@@ -26,12 +26,12 @@ and Docker Compose (version 1.6.0 or greater) already installed.
 3. Configure Docker Compose:
 
     ```console
-    user@host:szuru$ cp docker-compose.yml.example docker-compose.yml
-    user@host:szuru$ edit docker-compose.yml
+    user@host:szuru$ cp example.env .env
+    user@host:szuru$ edit .env
     ```
 
-    Read the comments to guide you. For production use, it is *important*
-    that you configure the volumes appropriately to avoid data loss.
+    Change the values of the variables in `.env` as needed.
+    Read the comments to guide you.
 
 ### Running the Application
 

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

docker-compose.yml.example

@@ -1,102 +0,0 @@
-## 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:
-
-  ## Python3 container for backend API
-  backend:
-    build:
-      context: ./server
-    depends_on:
-      - sql
-      - elasticsearch
-    environment: # Commented Values are Default
-      ## These should be the names of the dependent containers listed above, or
-      ## accessible hostnames/IP addresses if these services are running
-      ## outside of Docker
-      POSTGRES_HOST: sql
-      ESEARCH_HOST: elasticsearch
-      ## Credentials for database
-      POSTGRES_USER: szuru
-      POSTGRES_PASSWORD: badpass
-      ## Leave commented if using the official postgres container,
-      ## it will default to the value in POSTGRES_USER
-      #POSTGRES_DB:
-      ## Leave commented if using the default port 5432
-      #POSTGRES_PORT: 5432
-      ## Leave commented if using the default port 9200
-      #ESEARCH_PORT: 9200
-      ## Uncomment and change if you want to use a different index
-      #ESEARCH_INDEX: szurubooru
-      ## Leave commented unless you want verbose SQL in the container logs
-      #LOG_SQL: 1
-    volumes:
-      - data:/data
-      ## If more customizations that are not covered in `config.yaml.dist` are needed
-      ## Comment this line if you are not going
-      ## to supply a YAML file
-      - ./server/config.yaml:/opt/app/config.yaml
-
-  ## HTTP container for frontend
-  frontend:
-    build:
-      context: ./client
-      args:
-        ## This shows up on the homescreen, indicating build information
-        ## Change as desired
-        BUILD_INFO: docker-example
-    depends_on:
-      - backend
-    environment:
-      ## This should be the name of the previous container
-      BACKEND_HOST: backend
-    volumes:
-      - data:/data:ro
-    ports:
-      ## If you want to expose the website on another port like 80,
-      ## change to 80:80
-      - 8080:80
-
-  ## PostgreSQL container for database
-  sql:
-    image: postgres:alpine
-    restart: unless-stopped
-    environment:
-      ## These should equal the same credentials as used on the first container
-      POSTGRES_USER: szuru
-      POSTGRES_PASSWORD: badpass
-    volumes:
-      - database:/var/lib/postgresql/data
-
-  ## ElasticSearch container for image indexing
-  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:
-## IMPORTANT FOR PRODUCTION USE:
-##   To avoid data loss, you should read and understand how Docker volumes work
-##   before proceeding. Information can be found on
-##     https://docs.docker.com/storage/volumes/
-##   These mounts should be configured with drivers apporpriate for your system.
-##   For small deployments, bind mounts or using the local-persist driver should
-##   be fine. Make sure you mount to a directory that is safe and backed up.
-##   local-persist driver can be found at:
-##     https://github.com/CWSpear/local-persist
-## It is okay to leave these as-is for development or testing purposes
-
-  data: # This volume will hold persistant Image and User data for the board
-
-  database: # This holds the SQL database
-
-  index: # Scratch space for ElasticSearch Index

example.env

@@ -0,0 +1,16 @@
+# Database credentials
+POSTGRES_USER=szuru
+POSTGRES_PASSWORD=changeme
+
+# This shows up on the homescreen, indicating build information
+BUILD_INFO=latest
+
+# Port to expose HTTP service
+PORT=8080
+
+# Directory to store image data
+MOUNT_DATA=/var/local/szurubooru/data
+
+# Directory to store database files
+MOUNT_SQL=/var/local/szurubooru/sql
+