diff --git a/.gitignore b/.gitignore
index b551081..585944b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,3 +27,8 @@ build/
 
 # Backend data (uploaded images, database, etc.)
 backend/src/data/
+
+# Development-specific files (created by ./dev.sh)
+frontend/.env
+frontend/env.sh
+frontend/env-config.js
diff --git a/docker/dev/frontend/Dockerfile b/docker/dev/frontend/Dockerfile
index edfffeb..d306915 100644
--- a/docker/dev/frontend/Dockerfile
+++ b/docker/dev/frontend/Dockerfile
@@ -12,8 +12,13 @@ WORKDIR /app
 
 # Copy package files first to leverage Docker cache for npm install
 COPY frontend/package*.json ./
-COPY docker/dev/frontend/config/env.sh ./
-COPY docker/dev/frontend/config/.env ./
+
+# Copy environment configuration
+COPY docker/dev/frontend/config/env.sh ./env.sh
+COPY docker/dev/frontend/config/.env ./.env
+
+# Make env.sh executable
+RUN chmod +x ./env.sh
 
 # Copy nginx configuration for development
 COPY docker/dev/frontend/nginx.conf /etc/nginx/conf.d/default.conf
diff --git a/docker/prod/frontend/Dockerfile b/docker/prod/frontend/Dockerfile
index 202695c..d05afe3 100644
--- a/docker/prod/frontend/Dockerfile
+++ b/docker/prod/frontend/Dockerfile
@@ -26,8 +26,8 @@ EXPOSE 80
 
 # Copy .env file and shell script to container
 WORKDIR /usr/share/nginx/html
-COPY docker/prod/frontend/config/env.sh ./
-COPY docker/prod/frontend/config/.env ./
+COPY docker/prod/frontend/config/env.sh ./env.sh
+COPY docker/prod/frontend/config/.env ./.env
 
 # Add bash
 RUN apk add --no-cache bash