Add make stop and allow --incremental

[ci skip]

CONTRIBUTING.md

@@ -24,13 +24,13 @@ The only prerequisite is [Docker](https://www.docker.com/). If you're on Debian,
 
 ```bash
 $ curl -fsSL https://get.docker.com -o get-docker.sh  # have a look if you want
-$ sh get-docker.sh
+$ CHANNEL=stable sh get-docker.sh
 ```
 
 Fire up the container with the following.
 
 ```bash
-$ make dockerserver
+$ make serve
 ```
 
 Then visit the locally running website.
@@ -39,6 +39,12 @@ Then visit the locally running website.
 
 Then you can edit the files as normal and reload the page.
 
+To stop the container when you're done, you can run:
+
+```bash
+$ make stop
+```
+
 ## Notes
 
 1. For configuration, please note, we now use a `dev` environment config file:

Makefile

@@ -1,14 +1,26 @@
-dockerbuild:
-	@docker build -t autonomic/autonomic.zone:testing .
-.PHONY: dockerbuild
+IMG  := autonomic/autonomic.zone
+NAME := autonomic-zone-testing
+PORT := 4000
+TAG  := testing
 
-dockerserver: dockerbuild
+build:
+	@docker build -t $(IMG):$(TAG) .
+.PHONY: build
+
+stop:
+	@docker stop $(NAME) && docker rm $(NAME) --force
+.PHONY: stop
+
+serve: build
 	@docker run \
-		-e JEKYLL_PORT=4000 \
+		--name $(NAME) \
+		-e JEKYLL_PORT=$(PORT) \
 		-e JEKYLL_HOST=0.0.0.0 \
 		-e JEKYLL_CONFIG=_config_dev.yml \
+		-e JEKYLL_ENV=development \
 		-v $$(pwd):/usr/src/app \
-		-p 4000:4000 \
+		-p $(PORT):$(PORT) \
 		-d \
-		autonomic/autonomic.zone:testing
-.PHONY: dockerserver
+		$(IMG):$(TAG) && \
+		echo "Site available at http://localhost:4000"
+.PHONY: serve

sbin/entrypoint.sh

@@ -6,12 +6,15 @@ set -eu -o pipefail
 run_jekyll() {
   set -eu
 
-  bundle exec jekyll serve \
-    --config "$JEKYLL_CONFIG" \
-    --host "$JEKYLL_HOST" \
-    --port "$JEKYLL_PORT" \
-    --trace \
-    --verbose
+  # shellcheck disable=SC2155
+  local args="--config $JEKYLL_CONFIG --host $JEKYLL_HOST --port $JEKYLL_PORT --trace --verbose"
+
+  if [[ $JEKYLL_ENV == "development" ]]; then
+    # shellcheck disable=SC2155
+    local args="${args} --incremental"
+  fi
+
+  bundle exec jekyll serve $args
 }
 
 # Main entrypoint