• This is a bug report
• This is a feature request
• I searched existing issues before opening this one

Expected behavior

hadolint treats an escape character as the last line the same as dockerfile

Actual behavior

DL3018 warning: Pin versions in apk add. Instead of `apk add <package>` use `apk add <package>=<version>`

Steps to reproduce the behavior

**Output of hadolint --version

Haskell Dockerfile Linter 2.12.0

Dockerfile

RUN apk add --no-cache \
    foo=1.0 \
    bar=2.0 \

# More commands here