diff --git a/.env b/.env
index 9344583d..128ddcbc 100755
--- a/.env
+++ b/.env
@@ -7,7 +7,7 @@ LOGS_LOCATION=/path/to/docker_logs
 #ENVIRONMENT VARIABLES
 
 TZ=Europe/Paris
-PORT=20211
+NETALERTX_PORT=20211
 
 #DEVELOPMENT VARIABLES
 
diff --git a/install/docker/README.md b/install/docker/README.md
index a0adc638..d6267ba1 100644
--- a/install/docker/README.md
+++ b/install/docker/README.md
@@ -40,8 +40,8 @@ The container uses `network_mode: host` by default. This is **required** for cor
 ### Environment Variables
 You can customize the application by editing the `environment` section in the compose file. Common overrides include:
 
-*   `TZ`: Timezone (mapped via `/etc/localtime`).
-*   `SCAN_SUBNETS`: Define specific subnets to scan if auto-detection fails (e.g., `192.168.1.0/24`).
+*   Timezone is controlled by the read-only `/etc/localtime` bind mount (do not use a `TZ` variable).
+*   `SCAN_SUBNETS`: Not present by default in the compose `environment` blocks. You must manually add it if you need to override subnet scanning (e.g., `192.168.1.0/24`).
 
 For a full list of environment variables and configuration options, see the [Customize with Environment Variables](https://docs.netalertx.com/DOCKER_COMPOSE/?h=environmental+variables#customize-with-environmental-variables) section in the documentation.
 
diff --git a/install/docker/docker-compose.dev.yml b/install/docker/docker-compose.dev.yml
index dae1069f..a2c12b24 100644
--- a/install/docker/docker-compose.dev.yml
+++ b/install/docker/docker-compose.dev.yml
@@ -23,13 +23,13 @@ services:
         target: /etc/localtime
         read_only: true
     tmpfs:
-      - "/tmp:mode=1700,uid=0,gid=0,rw,noexec,nosuid,nodev,async,noatime,nodiratime"
+      - "/tmp:mode=1777,rw,noexec,nosuid,nodev,async,noatime,nodiratime"
     environment:
       PUID: ${NETALERTX_UID:-20211}
       PGID: ${NETALERTX_GID:-20211}
-      LISTEN_ADDR: ${LISTEN_ADDR:-0.0.0.0}
-      PORT: ${PORT:-20211}
-      GRAPHQL_PORT: ${GRAPHQL_PORT:-20212}
+      LISTEN_ADDR: ${NETALERTX_LISTEN_ADDR:-0.0.0.0}
+      PORT: ${NETALERTX_PORT:-20211}
+      GRAPHQL_PORT: ${NETALERTX_GRAPHQL_PORT:-20212}
     mem_limit: 2048m
     mem_reservation: 1024m
     cpu_shares: 512
diff --git a/install/docker/docker-compose.yml b/install/docker/docker-compose.yml
index 6622efcc..5dea86b0 100644
--- a/install/docker/docker-compose.yml
+++ b/install/docker/docker-compose.yml
@@ -23,13 +23,13 @@ services:
         target: /etc/localtime
         read_only: true
     tmpfs:
-      - "/tmp:mode=1700,uid=0,gid=0,rw,noexec,nosuid,nodev,async,noatime,nodiratime"
+      - "/tmp:mode=1777,rw,noexec,nosuid,nodev,async,noatime,nodiratime"
     environment:
       PUID: ${NETALERTX_UID:-20211}
       PGID: ${NETALERTX_GID:-20211}
-      LISTEN_ADDR: ${LISTEN_ADDR:-0.0.0.0}
-      PORT: ${PORT:-20211}
-      GRAPHQL_PORT: ${GRAPHQL_PORT:-20212}
+      LISTEN_ADDR: ${NETALERTX_LISTEN_ADDR:-0.0.0.0}
+      PORT: ${NETALERTX_PORT:-20211}
+      GRAPHQL_PORT: ${NETALERTX_GRAPHQL_PORT:-20212}
     mem_limit: 2048m
     mem_reservation: 1024m
     cpu_shares: 512