Add update script

update.sh

@@ -0,0 +1,56 @@
+#!/bin/bash
+# set -o xtrace
+
+VERSION=$1
+
+PORT=1313
+NAME=test-hugo
+
+# set version in Dockerfile
+sed -i "s/HUGO_VERSION=[0-9.]\+/HUGO_VERSION=$VERSION/g" Dockerfile
+
+# cleanup container
+docker stop "$NAME"
+docker rm "$NAME"
+rm -rf test-output
+
+# build image
+docker build --no-cache=true --pull --tag jojomi/hugo:latest .
+
+# verify image build
+docker images | grep jojomi/hugo | grep latest
+
+# run container
+mkdir --parents test-output
+docker run \
+  --env HUGO_WATCH=true \
+  --env HUGO_BASEURL=http://localhost:$PORT \
+  --name "$NAME" \
+  --volume "$(pwd)/test-src:/src" \
+  --volume "$(pwd)/test-output:/output" \
+  --publish "$PORT:1313" \
+  --detach \
+  jojomi/hugo:latest
+docker ps | grep "$NAME"
+
+# verify output
+xdg-open http://localhost:$PORT > /dev/null
+
+# ask for continuation
+read -r -p "Does it work? [y/N] " prompt
+
+# cleanup container
+docker stop "$NAME"
+docker rm "$NAME"
+sudo rm -rf test-output
+
+if [[ $prompt == "y" || $prompt == "Y" || $prompt == "yes" || $prompt == "Yes" ]]
+then
+  # git: commit, tag, push
+  git add Dockerfile && git commit -m "version $VERSION" && git tag $VERSION && git push && git push --tags
+  # open hub.docker.com
+  xdg-open https://hub.docker.com/r/jojomi/hugo/builds/ > /dev/null
+  xdg-open https://hub.docker.com/r/jojomi/hugo/~/settings/automated-builds/ > /dev/null
+fi
+
+