Automatically rewrite links to localhost when developing on docs locally.

.eleventy.js

@@ -16,7 +16,12 @@ module.exports = function(eleventyConfig) {
         // Replace links to .md files with links to directories. This allows unparsed Markdown links
         // to work on GitHub, while rendered links elsewhere also work.
         replaceLink: function (link, env) {
-            return link.replace(/\.md$/, '/');
+            link = link.replace(/\.md$/, '/');
+
+            if (process.env.NODE_ENV == "production") {
+                return link;
+            }
+            return link.replace('https://torsion.org/borgmatic/', 'http://localhost:8080/');
         }
     };
     let markdownItAnchorOptions = {

docs/Dockerfile

@@ -9,6 +9,8 @@ RUN borgmatic --help > /command-line.txt \
 
 FROM node:12.10.0-alpine as html
 
+ARG ENVIRONMENT=production
+
 WORKDIR /source
 
 RUN npm install @11ty/eleventy \
@@ -20,7 +22,7 @@ RUN npm install @11ty/eleventy \
 COPY --from=borgmatic /etc/borgmatic/config.yaml /source/docs/_includes/borgmatic/config.yaml
 COPY --from=borgmatic /command-line.txt /source/docs/_includes/borgmatic/command-line.txt
 COPY . /source
-RUN npx eleventy --input=/source/docs --output=/output/docs \
+RUN NODE_ENV=${ENVIRONMENT} npx eleventy --input=/source/docs --output=/output/docs \
   && mv /output/docs/index.html /output/index.html
 
 FROM nginx:1.16.1-alpine

scripts/dev-docs

@@ -2,9 +2,8 @@
 
 set -e
 
-docker build --tag borgmatic-docs --file docs/Dockerfile .
+docker build --tag borgmatic-docs --build-arg ENVIRONMENT=dev --file docs/Dockerfile .
 echo
 echo "You can view dev docs at http://localhost:8080"
-echo "Note that links within these docs will go to the online docs, so you will need to fiddle with URLs manually to stay in the dev docs."
 echo
 docker run --interactive --tty --publish 8080:80 --rm borgmatic-docs