docker: increase ulimit for open sockets

Author: ffreddow

docker/backend/Dockerfile

@@ -0,0 +1,15 @@
+FROM debian:12
+RUN apt update && apt install -y curl libpq-dev libssl-dev ca-certificates && rm -rf /var/lib/apt/lists/*
+
+ENV DATABASE_URL=${DATABASE_URL}
+ENV JWT_SECRET=${JWT_SECRET}
+ENV EMAIL_USER=${EMAIL_USER}
+ENV EMAIL_PASS=${EMAIL_PASS}
+ENV EMAIL_RELAY=${EMAIL_RELAY}
+ENV EMAIL_RELAY_PORT=${EMAIL_RELAY_PORT}
+ENV FRONTEND_URL=${FRONTEND_URL}
+ENV SERVER_NAME=${SERVER_NAME}
+ENV MONITORING_EMAIL=${MONITORING_EMAIL}
+ENV SENDER_EMAIL=${SENDER_EMAIL}
+ENV SENDER_NAME=${SENDER_NAME}
+ENV BRAND=${BRAND}

docker/docker-compose.yml

@@ -1,6 +1,7 @@
 services:
   nginx:
-    image: nginx:1.25
+    build:
+      dockerfile: nginx/Dockerfile
     restart: always
     depends_on:
       backend:
@@ -32,10 +33,11 @@ services:
       - ../db_connector:/db_connector
 
   backend:
-    image: rust:1-bookworm
     restart: always
     container_name: backend
-    command: ./backend
+    command: bash -c "ulimit -n 10000 && exec ./backend"
+    build:
+      dockerfile: backend/Dockerfile
     user: "${UID:-1000}:${GID:-1000}"
     depends_on:
       postgres:

docker/nginx/Dockerfile

@@ -0,0 +1,2 @@
+FROM nginx:1.25
+ENV SERVICEDOMAIN=${SERVICEDOMAIN}

docker/nginx/config/default.conf.template

@@ -2,6 +2,8 @@ upstream host_service {
     server backend:8081;
 }
 
+worker_rlimit_nofile 10000;
+
 map $remote_addr $remote_addr_anon {
     ~(?P<ip>\d+\.\d+\.\d+)\.    $ip.0;
     ~(?P<ip>[^:]+:[^:]+):       $ip::;