Feature: support dockerized builds of current source-code

Dockerfile

@@ -0,0 +1,60 @@
+################
+##### Builder
+##### docker buildx create --use --name multi-builder --platform linux/arm64,linux/amd64
+# https://github.com/docker/buildx/issues/318#issuecomment-1023226339
+#FROM --platform=$BUILDPLATFORM rustlang/rust:nightly-buster-slim as builder
+ARG BASE_IMAGE
+FROM ${BASE_IMAGE} AS builder
+
+# Installing git because of the workaround for the config
+# https://github.com/rust-lang/cargo/issues/10781#issuecomment-1441071052
+RUN apt-get update && apt-get install -y git
+
+WORKDIR /usr/src/github.com/rust-lang
+
+# Create blank project
+RUN USER=root cargo new mdBook
+
+WORKDIR /usr/src/github.com/rust-lang/mdBook
+
+## Install target platform (Cross-Compilation) --> Needed for Alpine
+# Use stable rather than nightly for the build target
+# Got errors while building after 6 months
+# https://substrate.stackexchange.com/questions/5379/how-do-i-fix-a-failed-build-error-e0635-unknown-feature-proc-macro-span-shri/9312#9312
+RUN rustup default stable
+
+# note: the `x86_64-unknown-linux-musl` target may not be installed  
+RUN rustup target add x86_64-unknown-linux-musl
+
+# We want dependencies cached, so copy those first.
+COPY Cargo.toml Cargo.lock /usr/src/github.com/rust-lang/mdBook
+# examples is referenced in Cargo.toml
+COPY examples /usr/src/github.com/rust-lang/mdBook/examples
+
+# This is a dummy build to pull dependencies and have them cached
+# https://github.com/rust-lang/cargo/issues/8172#issuecomment-659056517
+# Very slow builds: https://github.com/rust-lang/cargo/issues/9167#issuecomment-1219251978
+# Logs verbose: https://github.com/rust-lang/cargo/issues/1106#issuecomment-141555744
+RUN cargo build -vv --config "net.git-fetch-with-cli=true" --target x86_64-unknown-linux-musl --release
+
+WORKDIR /usr/src/github.com/rust-lang/mdBook
+
+# Now copy in the rest of the sources
+COPY src /usr/src/github.com/rust-lang/mdBook/src
+
+# This is the actual application build: # ./target/x86_64-unknown-linux-musl/release/mdbook
+RUN cargo build --locked --bin mdbook --release --target x86_64-unknown-linux-musl
+
+################
+##### Runtime
+FROM alpine:3.18.4 AS runtime 
+
+# Copy application binary from builder image
+COPY --from=builder /usr/src/github.com/rust-lang/mdBook/target/x86_64-unknown-linux-musl/release/mdbook /usr/local/bin/mdbook
+
+# Just to document which port a container from this image exposes
+EXPOSE 3000
+
+# The command to serve the books
+ENTRYPOINT ["mdbook", "serve", "--hostname", "0.0.0.0"]
+

README.md

@@ -11,6 +11,62 @@ The User Guide also serves as a demonstration to showcase what a book looks like
 
 If you are interested in contributing to the development of mdBook, check out the [Contribution Guide].
 
+## Container
+
+> **NOTE**: You need to have docker installed
+> https://docs.docker.com/engine/install/
+
+1. Locate a local directory with md files
+2. Quickly run a docker container with the current version:
+
+```console
+docker run -ti -v $(pwd):/mdbook -p 3000:3000 rust-lang/mdbook
+```
+
+* Using docker-compose.yaml, you can run to load the sources from the `test-book`.
+
+```console
+$ docker compose up --build
+[+] Building 0.0s (0/0)                                                                                                                                              docker-container:mac-linux-builder
+[+] Running 1/1
+ ✔ Container rustlang-mdbook  Recreated                                                                                                                                                            0.1s 
+Attaching to rustlang-mdbook
+rustlang-mdbook  | 2023-11-23 16:52:59 [INFO] (mdbook::book): Book building has started
+rustlang-mdbook  | 2023-11-23 16:52:59 [INFO] (mdbook::book): Running the html backend
+rustlang-mdbook  | 2023-11-23 16:53:00 [INFO] (mdbook::cmd::serve): Serving on: http://0.0.0.0:3000
+rustlang-mdbook  | 2023-11-23 16:53:00 [INFO] (warp::server): Server::run; addr=0.0.0.0:3000
+rustlang-mdbook  | 2023-11-23 16:53:00 [INFO] (warp::server): listening on http://0.0.0.0:3000
+rustlang-mdbook  | 2023-11-23 16:53:00 [INFO] (mdbook::cmd::watch): Listening for changes...
+```
+
+* Test it in a container as well
+
+> **NOTE**: docker compose creates a default network with the name of the `dir_default` 
+
+```console
+docker run -ti --network mdbook_default alpine/lynx mdbook:3000
+
+Introduction (p1 of 3)
+    1. Prefix Chapter
+    2.
+    3. 1. Introduction
+    4. 2. Draft Chapter
+    5.
+    6. Actual Markdown Tag Examples
+    7. 3. Markdown Individual tags
+    8.
+         1. 3.1. Heading
+         2. 3.2. Paragraphs
+         3. 3.3. Line Break
+         4. 3.4. Emphasis
+         5. 3.5. Blockquote
+         6. 3.6. List
+         7. 3.7. Code
+         8. 3.8. Image
+         9. 3.9. Links and Horizontal Rule
+        10. 3.10. Tables
+```
+
 ## License
 
 All the code in this repository is released under the ***Mozilla Public License v2.0***, for more information take a look at the [LICENSE] file.

docker-compose.yaml

@@ -0,0 +1,22 @@
+version: "3.9"
+
+services:
+
+  ####
+  #### 1. Place this file in a folder where the **/*.md files exist
+  #### 2. Adjust the port number to one available locally
+  #### 3. Adjust the volume path to point to the container's /src dir
+  ####
+  mdbook:
+    image: rust-lang/mdbook
+    container_name: rustlang-mdbook
+    platform: linux/amd64
+    build:
+      context: .
+      args:
+        BASE_IMAGE: rustlang/rust:nightly-buster-slim
+    ports:
+      - 3000:3000
+    volumes:
+      - ./test_book/src:/src
+