Add development + debugging docker configs

10-development-workflow/api-node/Dockerfile.dev

@@ -0,0 +1,25 @@
+# Pin specific version for stability
+# Use alpine for reduced image size
+FROM node:19.4-alpine as dev
+
+# Specify working directory other than /
+WORKDIR /usr/src/app
+
+# Copy only files required to install
+# dependencies (better layer caching)
+COPY package*.json ./
+
+# Install only production dependencies
+# Use cache mount to speed up install of existing dependencies
+RUN --mount=type=cache,target=/usr/src/app/.npm \
+  npm set cache /usr/src/app/.npm && \
+  npm install
+
+# Copy remaining source code AFTER installing dependencies. 
+# Again, copy only the necessary files
+COPY . .
+
+# Indicate expected port
+EXPOSE 3000
+
+CMD [ "npm", "run", "dev" ]