`wget` - the non-interactive network downloader

wget [OPTION]... [URL]...

Options you will use

-q, --quiet: Turn off wget's output (no progress, no messages).
-O, --output-document FILE: Write the document to FILE; -O - (as in -qO-) writes it to stdout, like curl.
-qO-: -q (quiet) plus -O - (write the page to stdout): print the body and nothing else, like curl -s.
-S, --server-response: Print the server's response headers.
--spider: Do not download, just check the page exists (a readiness probe).
-T, --timeout SECONDS: Network timeout (DNS, connect and read).
-t, --tries N: Number of retries (default 20; 0 = forever).
-c, --continue: Resume a partially downloaded file.
-P, --directory-prefix DIR: Save files under DIR.
--no-check-certificate: Do not verify the server certificate.
-U, --user-agent AGENT: The User-Agent to send.
--header HEADER: Extra header, e.g. --header "Host: shop.lab".
-nv, --no-verbose: Less output, but still errors and one line per file.
-Y, --proxy on/off: BusyBox wget: use the proxy (http_proxy) or not.

Alpine and BusyBox images ship wget but not curl, so wget -qO- http://svc/ is the usual in-container check. BusyBox wget has fewer options than GNU wget.

Try wget in a real terminal Free, in your browser - a real Ubuntu terminal to try it in, with missions that check your work.