How I build this website

I write a Markdown document (e.g. How-I-build-this-website.md) and add its .html counterpart to the $(pages) macro of this Makefile:

.SUFFIXES: .md .html

pages = \
    index.html \
    How-I-build-this-website.html

.md.html:
    markdown $< > $*.tmp
    cat header.html $*.tmp footer.html > $@ || (rm -f $@; false)
    -rm -f $*.tmp

.PHONY: all
all: $(pages)

$(pages): header.html footer.html

.PHONY: clean
clean:
    rm -f $(pages) *.tmp

Where header.html is the following:

<!DOCTYPE html>
<html lang="en">
<head>
<title>Stuff of matti</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link rel="stylesheet" href="style.css" />
</head>
<body>
<p><a href="index.html">Stuff of matti</a></p>
<hr>

And footer.html is the following:

<hr>
<p><a href="#">Back to top ↑</a></p>
</body>
</html>

Then I run make:

$ touch How-I-build-this-website.md
$ make
markdown How-I-build-this-website.md > How-I-build-this-website.tmp
cat header.html How-I-build-this-website.tmp footer.html > How-I-build-this-webs
ite.html || (rm -f How-I-build-this-website.html; false)
rm -f How-I-build-this-website.tmp

Links to new pages I add to index.md manually.

Then I upload the changed files by hand.