diff --git a/js/examples/langchain-express/.env.example b/js/examples/langchain-express/.env.example
new file mode 100644
index 000000000..9847a1df1
--- /dev/null
+++ b/js/examples/langchain-express/.env.example
@@ -0,0 +1 @@
+OPENAI_API_KEY=
\ No newline at end of file
diff --git a/js/examples/langchain-express/README.md b/js/examples/langchain-express/README.md
index b394b2552..57483a0f1 100644
--- a/js/examples/langchain-express/README.md
+++ b/js/examples/langchain-express/README.md
@@ -16,7 +16,9 @@ Open [http://localhost:3000](http://localhost:3000) with your browser to see the
 
 ## Getting Started With Docker-Compose
 
-Ensure that Docker is installed and running. Run the command `docker compose up` to spin up services for the frontend, backend, and Phoenix. Once those services are running, open [http://localhost:3000](http://localhost:3000) to use the chat interface. When you're finished, run `docker compose down` to spin down the services.
+Copy the `.env.example` file to `.env` and set your `OPENAI_API_KEY`.
+
+Ensure that Docker is installed and running. Run the command `docker compose up` to spin up services for the frontend, backend, and Phoenix. Once those services are running, open [http://localhost:3000](http://localhost:3000) to use the chat interface and [http://localhost:6006](http://localhost:6006) to view the Phoenix UI. When you're finished, run `docker compose down` to spin down the services.
 
 ## Learn More
 
diff --git a/js/examples/langchain-express/backend/.dockerignore b/js/examples/langchain-express/backend/.dockerignore
new file mode 100644
index 000000000..b512c09d4
--- /dev/null
+++ b/js/examples/langchain-express/backend/.dockerignore
@@ -0,0 +1 @@
+node_modules
\ No newline at end of file
diff --git a/js/examples/langchain-express/backend/Dockerfile b/js/examples/langchain-express/backend/Dockerfile
index 86acb6256..d083c3286 100644
--- a/js/examples/langchain-express/backend/Dockerfile
+++ b/js/examples/langchain-express/backend/Dockerfile
@@ -6,13 +6,13 @@ FROM base AS deps
 RUN apk add --no-cache libc6-compat
 WORKDIR /app
 COPY package.json ./
-RUN npm i
+RUN npm i --quiet
 
 # Rebuild the source code only when needed
 FROM base AS builder
 WORKDIR /app
 COPY --from=deps /app/node_modules ./node_modules
-COPY . /app/
+COPY . .
 RUN npm run build
 
 # Production image, copy all the files and run the server
@@ -20,7 +20,7 @@ FROM base AS runner
 WORKDIR /app
 ENV NODE_ENV production
 COPY --from=builder /app/dist ./dist
-COPY package*.json ./
-RUN npm i --production
+COPY --from=deps /app/node_modules ./node_modules
+COPY package.json ./
 EXPOSE 8000
 CMD ["node", "--import", "./dist/instrumentation.cjs", "./dist/index.cjs"]
diff --git a/js/examples/langchain-express/compose.yml b/js/examples/langchain-express/compose.yml
index 6b54c5b33..ef76c8901 100644
--- a/js/examples/langchain-express/compose.yml
+++ b/js/examples/langchain-express/compose.yml
@@ -5,9 +5,12 @@ services:
     ports:
       - "6006:6006"
   backend:
-    build: backend
+    build:
+      context: backend
+      dockerfile: Dockerfile
     ports:
       - "8000:8000"
+    env_file: .env
     environment:
       - OPENAI_API_KEY=${OPENAI_API_KEY}
       - COLLECTOR_ENDPOINT=http://phoenix:6006/v1/traces
@@ -18,7 +21,9 @@ services:
       timeout: 1s
       retries: 5
   frontend:
-    build: frontend
+    build:
+      context: frontend
+      dockerfile: Dockerfile
     ports:
       - "3000:3000"
     depends_on:
diff --git a/js/examples/langchain-express/frontend/.dockerignore b/js/examples/langchain-express/frontend/.dockerignore
new file mode 100644
index 000000000..b512c09d4
--- /dev/null
+++ b/js/examples/langchain-express/frontend/.dockerignore
@@ -0,0 +1 @@
+node_modules
\ No newline at end of file
diff --git a/js/examples/langchain-express/frontend/Dockerfile b/js/examples/langchain-express/frontend/Dockerfile
index f69d0ea58..1496439fb 100644
--- a/js/examples/langchain-express/frontend/Dockerfile
+++ b/js/examples/langchain-express/frontend/Dockerfile
@@ -7,7 +7,7 @@ FROM base AS deps
 RUN apk add --no-cache libc6-compat
 WORKDIR /app
 COPY package.json ./
-RUN npm i
+RUN npm i --quiet
 
 # Rebuild the source code only when needed
 FROM base AS builder
diff --git a/js/examples/llama-index-express/.env.example b/js/examples/llama-index-express/.env.example
new file mode 100644
index 000000000..9847a1df1
--- /dev/null
+++ b/js/examples/llama-index-express/.env.example
@@ -0,0 +1 @@
+OPENAI_API_KEY=
\ No newline at end of file
diff --git a/js/examples/llama-index-express/README.md b/js/examples/llama-index-express/README.md
index 82f4b8a51..4032f3f12 100644
--- a/js/examples/llama-index-express/README.md
+++ b/js/examples/llama-index-express/README.md
@@ -14,7 +14,9 @@ Open [http://localhost:3000](http://localhost:3000) with your browser to see the
 
 ## Getting Started With Docker-Compose
 
-Ensure that Docker is installed and running. Run the command `docker compose up` to spin up services for the frontend, backend, and Phoenix. Once those services are running, open [http://localhost:3000](http://localhost:3000) to use the chat interface. When you're finished, run `docker compose down` to spin down the services.
+Copy the `.env.example` file to `.env` and set your `OPENAI_API_KEY`.
+
+Ensure that Docker is installed and running. Run the command `docker compose up` to spin up services for the frontend, backend, and Phoenix. Once those services are running, open [http://localhost:3000](http://localhost:3000) to use the chat interface and [http://localhost:6006](http://localhost:6006) to view the Phoenix UI. When you're finished, run `docker compose down` to spin down the services.
 
 ## Learn More
 
diff --git a/js/examples/llama-index-express/backend/.dockerignore b/js/examples/llama-index-express/backend/.dockerignore
new file mode 100644
index 000000000..b512c09d4
--- /dev/null
+++ b/js/examples/llama-index-express/backend/.dockerignore
@@ -0,0 +1 @@
+node_modules
\ No newline at end of file
diff --git a/js/examples/llama-index-express/backend/Dockerfile b/js/examples/llama-index-express/backend/Dockerfile
index e04d00815..2f2383e29 100644
--- a/js/examples/llama-index-express/backend/Dockerfile
+++ b/js/examples/llama-index-express/backend/Dockerfile
@@ -6,7 +6,7 @@ FROM base AS deps
 RUN apk add --no-cache libc6-compat
 WORKDIR /app
 COPY package*.json ./
-RUN npm ci
+RUN npm i --quiet
 
 # Rebuild the source code only when needed
 FROM base AS builder
@@ -20,7 +20,7 @@ FROM base AS runner
 WORKDIR /app
 ENV NODE_ENV production
 COPY --from=builder /app/dist ./dist
+COPY --from=deps /app/node_modules ./node_modules
 COPY package*.json ./
-RUN npm i --production
 EXPOSE 8000
 CMD ["node", "--import", "./dist/instrumentation.cjs", "./dist/index.cjs"]
diff --git a/js/examples/llama-index-express/compose.yml b/js/examples/llama-index-express/compose.yml
index 6b54c5b33..d615f4441 100644
--- a/js/examples/llama-index-express/compose.yml
+++ b/js/examples/llama-index-express/compose.yml
@@ -17,6 +17,7 @@ services:
       interval: 5s
       timeout: 1s
       retries: 5
+    env_file: .env
   frontend:
     build: frontend
     ports:
diff --git a/js/examples/llama-index-express/frontend/.dockerignore b/js/examples/llama-index-express/frontend/.dockerignore
new file mode 100644
index 000000000..b512c09d4
--- /dev/null
+++ b/js/examples/llama-index-express/frontend/.dockerignore
@@ -0,0 +1 @@
+node_modules
\ No newline at end of file
diff --git a/js/examples/llama-index-express/frontend/Dockerfile b/js/examples/llama-index-express/frontend/Dockerfile
index 912c0b084..0b8bd258d 100644
--- a/js/examples/llama-index-express/frontend/Dockerfile
+++ b/js/examples/llama-index-express/frontend/Dockerfile
@@ -7,7 +7,7 @@ FROM base AS deps
 RUN apk add --no-cache libc6-compat
 WORKDIR /app
 COPY package*.json ./
-RUN npm ci
+RUN npm i --quiet
 
 # Rebuild the source code only when needed
 FROM base AS builder