alertmanager/template/Makefile
Brad Ison c0a7b75c9c
Automate CSS-inlining for default HTML email template (#2798)
* Automate CSS-inlining for default HTML email template

The original HTML email template was added in `template/email.html`.
It looks like the CSS was manually inlined.  Most likely using the
premailer.dialect.ca web form, which is mentioned in the README for
the Mailgun transactional-email-templates project.  The resulting HTML
with inlined CSS was then copied into `template/default.tmpl`.  This
has resulted in `email.html` and `default.tmpl` diverging at times.

This commit adds build automation to inline the CSS automatically
using [juice][1].  The Go template containing the resulting HTML has
been moved into its own file to avoid the script that performs the CSS
inlining having to parse the `default.tmpl` file to insert it there.

Fixes #1939.

[1]: https://www.npmjs.com/package/juice

Signed-off-by: Brad Ison <bison@xvdf.io>

* Update asset/assets_vfsdata.go

Signed-off-by: Brad Ison <bison@xvdf.io>
2022-01-03 17:33:53 +01:00

18 lines
536 B
Makefile

DOCKER_IMG := altermanager-template
DOCKER_RUN_CURRENT_USER := docker run --user=$(shell id -u $(USER)):$(shell id -g $(USER))
DOCKER_CMD := $(DOCKER_RUN_CURRENT_USER) --rm -t -v $(PWD):/app -w /app $(DOCKER_IMG)
ifeq ($(NO_DOCKER), true)
DOCKER_CMD=
endif
template-image:
@(if [ "$(NO_DOCKER)" != "true" ] ; then \
echo ">> build template docker image"; \
docker build -t $(DOCKER_IMG) . > /dev/null; \
fi; )
email.tmpl: template-image email.html
@echo ">> inline css for html email template"
$(DOCKER_CMD) ./inline-css.js