Generate xeplist on Docker build

Dockerfile

@@ -4,10 +4,11 @@
 FROM xmppxsf/xeps-base:latest
 
 ARG NCORES=1
-ARG TARGETS="html inbox-html inbox-xml pdf"
+ARG TARGETS="html inbox-html inbox-xml pdf xeplist"
 
 COPY *.xml xep.* *.css *.xsl *.js *.xsl Makefile /src/
 COPY resources/*.pdf /src/resources/
+COPY tools/*.py /src/tools/
 COPY inbox/*.xml inbox/*.ent inbox/*.dtd /src/inbox/
 
 WORKDIR /src

Makefile

@@ -53,6 +53,9 @@ $(OUTDIR)/inbox/%: build/inbox
 build/inbox:
 	mkdir -p build/inbox
 
+.PHONY: xeplist
+xeplist: $(OUTDIR)/xeplist.xml
+
 .PHONY: html
 html: $(xep_htmls)
 
@@ -86,6 +89,9 @@ xep-%.pdf: $(OUTDIR)/xep-%.pdf ;
 $(all_xep_xmls): $(OUTDIR)/%.xml: %.xml
 	cp $< $@
 
+$(OUTDIR)/xeplist.xml: $(wildcard *.xml) $(wildcard inbox/*.xml)
+	./tools/extract-metadata.py > $@
+
 $(EXAMPLESDIR)/%.xml: xep-%.xml $(XMLDEPS) examples.xsl $(EXAMPLESDIR)
 	xsltproc --path $(CURDIR) examples.xsl "$<" > "$@" && echo "Finished building $@"