fix: Jaeger image tag + remap PG/Valkey ports (#66)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

docker-compose.yml

@@ -2,7 +2,7 @@ services:
   postgres:
     image: pgvector/pgvector:pg17
     ports:
-      - '5432:5432'
+      - '${PG_HOST_PORT:-5433}:5432'
     environment:
       POSTGRES_USER: mosaic
       POSTGRES_PASSWORD: mosaic
@@ -18,7 +18,7 @@ services:
   valkey:
     image: valkey/valkey:8-alpine
     ports:
-      - '6379:6379'
+      - '${VALKEY_HOST_PORT:-6380}:6379'
     volumes:
       - valkey_data:/data
     healthcheck:
@@ -39,7 +39,7 @@ services:
         condition: service_started
 
   jaeger:
-    image: jaegertracing/jaeger:2
+    image: jaegertracing/jaeger:2.6.0
     ports:
       - '16686:16686' # Jaeger UI
       - '4319:4317' # Jaeger OTLP gRPC (internal, collector forwards here)