diff --git a/docker/Dockerfile b/docker/Dockerfile
index 11cdc261..93b13950 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,5 +1,5 @@
 ### Stage 1: Build the frontend
-FROM --platform=linux/amd64 node:20 as build-frontend
+FROM node:20 as build-frontend
 
 USER node
 
diff --git a/docker/entrypoint.sh b/docker/entrypoint.sh
index 5a5434db..62394a03 100644
--- a/docker/entrypoint.sh
+++ b/docker/entrypoint.sh
@@ -9,20 +9,24 @@ terminate_process() {
 # Trap termination signals
 trap terminate_process TERM INT
 
-if [ -z "${LIVEKIT_URL}" ]; then
-    echo "LIVEKIT_URL is required"
-    echo "example: docker run -e LIVEKIT_URL=https://livekit-server:7880 -e LIVEKIT_API_KEY=api_key -e LIVEKIT_API_SECRET=api_secret -p 6080:6080 openvidu-call"
-    exit 1
-fi
-if [ -z "${LIVEKIT_API_KEY}" ]; then
-    echo "LIVEKIT_API_KEY is required"
-    echo "example: docker run -e LIVEKIT_URL=https://livekit-server:7880 -e LIVEKIT_API_KEY=api_key -e LIVEKIT_API_SECRET=api_secret -p 6080:6080 openvidu-call"
-    exit 1
-fi
-if [ -z "${LIVEKIT_API_SECRET}" ]; then
-    echo "LIVEKIT_API_SECRET is required"
-    echo "example: docker run -e LIVEKIT_URL=https://livekit-server:7880 -e LIVEKIT_API_KEY=api_key -e LIVEKIT_API_SECRET=api_secret -p 6080:6080 openvidu-call"
-    exit 1
+# If a custom config directory is not provided,
+# check minimal required environment variables
+if [ -z "${CALL_CONFIG_DIR}" ]; then
+    if [ -z "${LIVEKIT_URL}" ]; then
+        echo "LIVEKIT_URL is required"
+        echo "example: docker run -e LIVEKIT_URL=https://livekit-server:7880 -e LIVEKIT_API_KEY=api_key -e LIVEKIT_API_SECRET=api_secret -p 6080:6080 openvidu-call"
+        exit 1
+    fi
+    if [ -z "${LIVEKIT_API_KEY}" ]; then
+        echo "LIVEKIT_API_KEY is required"
+        echo "example: docker run -e LIVEKIT_URL=https://livekit-server:7880 -e LIVEKIT_API_KEY=api_key -e LIVEKIT_API_SECRET=api_secret -p 6080:6080 openvidu-call"
+        exit 1
+    fi
+    if [ -z "${LIVEKIT_API_SECRET}" ]; then
+        echo "LIVEKIT_API_SECRET is required"
+        echo "example: docker run -e LIVEKIT_URL=https://livekit-server:7880 -e LIVEKIT_API_KEY=api_key -e LIVEKIT_API_SECRET=api_secret -p 6080:6080 openvidu-call"
+        exit 1
+    fi
 fi