How to fix docker: Error response from daemon: OCI runtime create failed: container_linux.go: starting container process caused: exec: "/docker-entrypoint.sh": stat /docker-entrypoint.sh: no such file or directory in Docker

# Start a shell in the image (bypassing entrypoint)
docker run --rm -it --entrypoint /bin/sh your-image:tag

# Once inside, check if the file exists
ls -la /docker-entrypoint.sh

# Or check the expected directory
ls -la /app/

# Correct - copy then set entrypoint
WORKDIR /app
COPY docker-entrypoint.sh /docker-entrypoint.sh
RUN chmod +x /docker-entrypoint.sh
ENTRYPOINT ["/docker-entrypoint.sh"]

# Wrong - file copied to wrong location
COPY docker-entrypoint.sh /app/
ENTRYPOINT ["/docker-entrypoint.sh"]  # Looks in / not /app/

# Wrong - relative path without WORKDIR
COPY docker-entrypoint.sh .
ENTRYPOINT ["./docker-entrypoint.sh"]  # Depends on WORKDIR

# Check file type
file docker-entrypoint.sh
# If it shows "CRLF line terminators", that's the problem

# Check for carriage returns
cat -A docker-entrypoint.sh | head -5
# ^M at end of lines indicates Windows line endings

# Using dos2unix
dos2unix docker-entrypoint.sh

# Using sed
sed -i 's/\r$//' docker-entrypoint.sh

COPY docker-entrypoint.sh /docker-entrypoint.sh
RUN sed -i 's/\r$//' /docker-entrypoint.sh && chmod +x /docker-entrypoint.sh

# docker-compose.yml - problematic setup
services:
  app:
    build: .
    volumes:
      - ./src:/app  # This shadows everything in /app including entrypoint!

# Option 1: Put entrypoint outside mounted directory
services:
  app:
    build: .
    volumes:
      - ./src:/app/src  # Mount to subdirectory instead

# Option 2: Place entrypoint in root, not /app
# In Dockerfile:
# COPY docker-entrypoint.sh /docker-entrypoint.sh
# ENTRYPOINT ["/docker-entrypoint.sh"]

# Builder stage
FROM node:18 AS builder
WORKDIR /app
COPY . .
RUN npm run build

# Final stage - MUST copy entrypoint from builder or source
FROM node:18-slim
WORKDIR /app

# Copy built assets
COPY --from=builder /app/dist ./dist

# Don't forget the entrypoint!
COPY --from=builder /app/docker-entrypoint.sh /docker-entrypoint.sh
# Or copy directly from build context:
COPY docker-entrypoint.sh /docker-entrypoint.sh

RUN chmod +x /docker-entrypoint.sh
ENTRYPOINT ["/docker-entrypoint.sh"]

# Correct - double quotes (JSON syntax)
ENTRYPOINT ["/docker-entrypoint.sh"]
CMD ["start"]

# Wrong - single quotes cause parse errors
ENTRYPOINT ['/docker-entrypoint.sh']  # Will fail!

# Alternative - shell form (works but has limitations)
ENTRYPOINT /docker-entrypoint.sh

# Script uses bash but Alpine only has sh by default
#!/bin/bash  # Won't work on Alpine without installing bash

# Option 1: Use sh instead of bash in your script
#!/bin/sh

# Option 2: Install bash in Alpine
FROM alpine:3.18
RUN apk add --no-cache bash
COPY docker-entrypoint.sh /docker-entrypoint.sh
RUN chmod +x /docker-entrypoint.sh
ENTRYPOINT ["/docker-entrypoint.sh"]

docker run --rm -it --entrypoint /bin/sh alpine:3.18 -c "cat /etc/shells"

COPY docker-entrypoint.sh /docker-entrypoint.sh
RUN chmod +x /docker-entrypoint.sh
ENTRYPOINT ["/docker-entrypoint.sh"]

# On your host machine
chmod +x docker-entrypoint.sh
git update-index --chmod=+x docker-entrypoint.sh  # Preserve in git

# Rebuild without cache
docker build --no-cache -t your-image:tag .

# Or with docker-compose
docker-compose build --no-cache

# Then run to test
docker run --rm your-image:tag