chore(self-host): tune bundled postgres for the shipped box (#2143)

deploy/self-hosting/docker-compose.yml

@@ -120,6 +120,31 @@ services:
     image: postgres:16-alpine
     restart: unless-stopped
     networks: [fluxer]
+    command: >
+      postgres
+      -c max_connections=150
+      -c shared_buffers=512MB
+      -c effective_cache_size=2GB
+      -c work_mem=8MB
+      -c maintenance_work_mem=256MB
+      -c autovacuum_work_mem=128MB
+      -c random_page_cost=1.1
+      -c effective_io_concurrency=200
+      -c default_statistics_target=200
+      -c jit=off
+      -c min_wal_size=512MB
+      -c max_wal_size=2GB
+      -c checkpoint_completion_target=0.9
+      -c wal_buffers=16MB
+      -c wal_compression=zstd
+      -c bgwriter_delay=50ms
+      -c bgwriter_lru_maxpages=1000
+      -c autovacuum_vacuum_scale_factor=0.05
+      -c autovacuum_analyze_scale_factor=0.02
+      -c autovacuum_vacuum_cost_limit=2000
+      -c track_io_timing=on
+      -c shared_preload_libraries=pg_stat_statements
+    shm_size: 256mb
     environment:
       POSTGRES_DB: fluxer
       POSTGRES_USER: fluxer