chore(docker): configure production resource limits for 4 CPU / 8GB server

- nginx-prod: 0.5 CPU / 512M RAM (limits), 0.25 CPU / 256M (reserved)
- frontend-prod: 0.5 CPU / 512M RAM (limits), 0.25 CPU / 256M (reserved)
- backend-prod: 1.5 CPU / 2G RAM (limits), 1.0 CPU / 1G (reserved)
- db-prod: 1.0 CPU / 3G RAM (limits), 0.75 CPU / 2G (reserved)

Total: 3.5 CPU / 6GB limits, 2.25 CPU / 3.5GB reserved
Leaves ~0.5 CPU / 2GB for host system

docker-compose.yml

@@ -43,6 +43,14 @@ services:
       options:
         max-size: "10m"
         max-file: "3"
+    deploy:
+      resources:
+        limits:
+          cpus: '0.5'
+          memory: 512M
+        reservations:
+          cpus: '0.25'
+          memory: 256M
     profiles: ["prod"]
     networks:
       - slc_network
@@ -91,6 +99,14 @@ services:
       options:
         max-size: "10m"
         max-file: "3"
+    deploy:
+      resources:
+        limits:
+          cpus: '0.5'
+          memory: 512M
+        reservations:
+          cpus: '0.25'
+          memory: 256M
     profiles: ["prod"]
     networks:
       - slc_network
@@ -169,11 +185,11 @@ services:
     deploy:
       resources:
         limits:
-          cpus: '1'
-          memory: 512M
+          cpus: '1.5'
+          memory: 2G
         reservations:
-          cpus: '0.5'
-          memory: 256M
+          cpus: '1.0'
+          memory: 1G
     profiles: ["prod"]
     networks:
       - slc_network
@@ -217,11 +233,11 @@ services:
     deploy:
       resources:
         limits:
-          cpus: '2'
-          memory: 2G
+          cpus: '1.0'
+          memory: 3G
         reservations:
-          cpus: '1'
-          memory: 1G
+          cpus: '0.75'
+          memory: 2G
     profiles: ["prod"]
     networks:
       - slc_network