Dockerfile =link= Download Tar Gz And Extract May 2026

: Downloads the file. -f fails silently on server errors, -s is silent (no progress bar), -S shows errors if it fails, and -L follows redirects.

: ADD local-file.tar.gz /app/ (Auto-extracts local file).

# Example: Downloading and extracting Go FROM alpine:latest # Install dependencies needed for download (curl) and extraction (tar) RUN apk add --no-cache curl tar # Download and extract in a single layer RUN curl -fsSL https://example.com | tar -xzC /usr/local/bin Use code with caution. dockerfile download tar gz and extract

: ADD https://url/file.tar.gz /tmp/ (Just downloads the compressed file, requiring a separate RUN tar command that creates an extra layer). Best Practices Checklist

Use a RUN instruction to download the file and pipe it directly to the tar command. This ensures the archive is never written to the disk in its compressed form, saving significant space. dockerfile : Downloads the file

To download and extract a .tar.gz archive in a Dockerfile, the most efficient method is using a single RUN command with curl or wget piped directly into tar . This approach prevents creating unnecessary intermediate layers and keeps the final image lean by not storing the compressed file itself.

: Sends the downloaded data directly to the next command without saving it as a file. tar -xzC /target/path : Extracts the archive. -x : Extract. -z : Filter through gzip (for .gz files). -C : Changes to the specified directory before extracting. Alternative: Using ADD (Best for Local Files Only) # Example: Downloading and extracting Go FROM alpine:latest

While the ADD instruction can download files from URLs, it automatically extract them if the source is a remote URL. It only auto-extracts local tar archives from your build context into the image.