Docusaurus config needs to be updated before building docs

.travis.yml

@@ -11,6 +11,7 @@ services:
 script:
   - gulp build
   - gulp test --coverage
+  - ./scripts/docs-config.sh
   - npm run docs
   - npm run typedoc
   - gulp package

scripts/deploy.sh

@@ -5,9 +5,10 @@ set -e
 TARGET_DIR='gh-pages'
 TARGET_BRANCH='master'
 TARGET_REPO_URL="https://$GITHUB_AUTH_TOKEN@github.com/chartjs/chartjs.github.io.git"
-VERSION_REGEX='[[:digit:]]+.[[:digit:]]+.[[:digit:]]+(-.*)?'
 
+# Note: this code also exists in docs-config.sh
 # Make sure that this script is executed only for the release and master branches
+VERSION_REGEX='[[:digit:]]+.[[:digit:]]+.[[:digit:]]+(-.*)?'
 if [[ "$TRAVIS_BRANCH" =~ ^release.*$ ]]; then
     # Travis executes this script from the repository root, so at the same level than package.json
     VERSION=$(node -p -e "require('./package.json').version")

scripts/docs-config.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+set -e
+
+# Note: this code also exists in deploy.sh
+# Make sure that this script is executed only for the release and master branches
+VERSION_REGEX='[[:digit:]]+.[[:digit:]]+.[[:digit:]]+(-.*)?'
+if [[ "$TRAVIS_BRANCH" =~ ^release.*$ ]]; then
+    # Travis executes this script from the repository root, so at the same level than package.json
+    VERSION=$(node -p -e "require('./package.json').version")
+elif [ "$TRAVIS_BRANCH" == "master" ]; then
+    VERSION="master"
+else
+    echo "Skipping deploy because this is not the master or release branch"
+    exit 0
+fi
+
+# tag is next|latest|master
+# https://www.chartjs.org/docs/$tag/
+function update_config {
+    local tag=''
+    if [ "$VERSION" == "master" ]; then
+        tag=master
+    elif [[ "$VERSION" =~ ^[^-]+$ ]]; then
+        tag=lastest
+    else
+        tag=next
+    fi
+    sed -i -e "s/VERSION/$tag/g" "docs/docusaurus.config.js"
+}
+
+update_config