Dockerfile updates and Fixes to CI process

.github/workflows/docker.yml

@@ -1,4 +1,4 @@
-name: CI/CD Docker Build/Publish
+name: Docker
 
 on:
   push:
@@ -19,6 +19,7 @@ on:
 jobs:
   build-and-publish-image:
     runs-on: ubuntu-latest
+    timeout-minutes: 30
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -55,12 +56,12 @@ jobs:
       # Build image and only publish if not a Pull Request
       - name: Build and Publish Docker Image
         uses: docker/build-push-action@v5
+        timeout-minutes: 30
         with:
           context: .
           push: ${{ github.event_name != 'pull_request' }}
-          target: release
           cache-from: type=gha
           cache-to: type=gha,mode=max
-          platforms: linux/amd64,linux/arm64,linux/arm/v7,linux/arm/v6
+          platforms: linux/amd64,linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

@@ -1,18 +1,22 @@
+# syntax=docker/dockerfile:1
 
-ARG NODE_VERSION=20.0.0
-
-FROM node:${NODE_VERSION}-alpine
+FROM node:20-alpine
 
+# Use production node environment by default.
 ENV NODE_ENV production
 
 WORKDIR /app
 
-
+# Download dependencies as a separate step to take advantage of Docker's caching.
+# Leverage a cache mount to /root/.npm to speed up subsequent builds.
+# Leverage a bind mounts to package.json and package-lock.json to avoid having to copy them into
+# into this layer.
 RUN --mount=type=bind,source=package.json,target=package.json \
-    --mount=type=bind,source=package-lock.json,target=package-lock.json \
-    --mount=type=cache,target=/root/.npm 
+    --mount=type=bind,source=package-lock.json,target=package-lock.json \
+    --mount=type=cache,target=/root/.npm \
+    npm ci --omit=dev
 
-# Run the application as a root user.
+# Run the application as a non-root user.
 USER root
 
 # Copy the rest of the source files into the image.
@@ -23,4 +27,3 @@ EXPOSE 8000
 
 # Run the application.
 CMD node app.js
-