[skip ci] Add postgresql compose file (#180)

* Add compose file specifically for postgresql.
Remove postgresql lines from regular compose file.

* remove unneeded network, switch postgresql image, remove hard set container_names

docker-compose-postgresql.yml

@@ -0,0 +1,66 @@
+---
+services:
+  suwayomi:
+    image: ghcr.io/suwayomi/suwayomi-server:preview
+    # user: 1000:1000
+    environment:
+      - TZ=${TZ:-Etc/UTC} # Add a TZ variable to .env to change it
+      - DATABASE_TYPE=POSTGRESQL
+      - DATABASE_URL=postgresql://postgresql:5432/${POSTGRES_DB}
+      - DATABASE_USERNAME=${POSTGRES_USER}
+      - DATABASE_PASSWORD=${POSTGRES_PASSWORD}
+      # Comment these out if you do not use the flaresolverr container at the bottom of this file
+      - FLARESOLVERR_ENABLED=true
+      - FLARESOLVERR_URL=http://flaresolverr:8191
+#  #################################################################################################
+#
+#    !!! IMPORTANT !!!
+#     - server settings can be changed during runtime in the WebUI
+#     - providing an environment variable will OVERWRITE the current setting value when starting the container
+#
+#  #################################################################################################
+#
+#    example for setting env vars:
+#
+#      - BIND_IP=0.0.0.0
+#      - BIND_PORT=4567
+#      - SOCKS_PROXY_ENABLED=false
+#      - DOWNLOAD_AS_CBZ=true
+#      - AUTH_MODE=basic_auth
+#      - AUTH_USERNAME=manga
+#      - AUTH_PASSWORD=hello123
+#      - EXTENSION_REPOS=["http://github.com/orginazation-name/repo-name", "http://github.com/orginazation-name-2/repo-name-2"]
+    depends_on:
+      postgresql:
+        condition: service_healthy
+        restart: true
+    volumes:
+      - ./data:/home/suwayomi/.local/share/Tachidesk
+    ports:
+      - "4567:4567"
+    restart: on-failure:3
+
+  postgresql:
+    image: postgres:17.6
+    environment:
+      - POSTGRES_USER=${POSTGRES_USER}
+      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
+      - PGDATA=/data/postgres
+      - POSTGRES_DB=${POSTGRES_DB}
+      - TZ=${TZ:-Etc/UTC}
+      - PGTZ=${TZ:-Etc/UTC}
+    volumes:
+      - ./postgres:/data/postgres
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -d ${POSTGRES_DB} -U ${POSTGRES_USER}"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+      start_period: 30s
+  
+  flaresolverr:
+    image: ghcr.io/thephaseless/byparr:latest
+    environment:
+      - TZ=${TZ:-Etc/UTC}
+    restart: unless-stopped