DL4001: Either use wget or curl but not both
Warning Maintainability
Why This Matters
Installing both wget and curl in the same image adds unnecessary size since they serve the same purpose: downloading files via HTTP. Having two tools for the same job increases the attack surface and creates inconsistency in how files are fetched. Pick one and use it consistently throughout your Dockerfile.
How to Fix
Standardize on either curl or wget throughout the Dockerfile
Before (incorrect)
RUN curl -o file1.txt https://example.com/file1
RUN wget https://example.com/file2After (correct)
RUN curl -o file1.txt https://example.com/file1
RUN curl -o file2.txt https://example.com/file2Rule Details
- Rule Code
- DL4001
- Severity
- Warning
- Category
- Maintainability