[Solved] Given this Dockerfile snippet:FROM node:18-alpine WORKDIR /app COPY . . RUN npm install CMD ["npm", "start"]What happens when you build and run this container? | Remix

Remix - Deployment

Given this Dockerfile snippet:

FROM node:18-alpine
WORKDIR /app
COPY . .
RUN npm install
CMD ["npm", "start"]

What happens when you build and run this container?

AThe app installs dependencies and starts with 'npm start' inside /app.

BThe container fails because 'COPY . .' is invalid syntax.

CThe app runs but without installing dependencies.

DThe container exposes port 3000 automatically.

Step-by-Step Solution

Solution:

Step 1: Analyze Dockerfile commands
It sets node image, sets /app directory, copies files, installs dependencies, and runs 'npm start'.
Step 2: Check each option
COPY syntax is valid, dependencies are installed, no port exposed automatically.
Final Answer:
The app installs dependencies and starts with 'npm start' inside /app. -> Option A
Quick Check:
Build and run = install then start [OK]

Quick Trick: COPY . . copies current folder to container [OK]

Common Mistakes:

MISTAKES

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