Add a Dockerfile to build a Docker image (#652)

Co-authored-by: Vinh Nguyen <vinh.4.nguyen@worldline.com>

.github/workflows/build.yml

@@ -15,11 +15,12 @@ jobs:
         os:
           - ubuntu-latest
         node-version:
-          - 12.x
-          - 14.x
+          - 14
+          - 16
+          - 18
         include:
           - os: ubuntu-latest
-            node-version: '14.x'
+            node-version: '16'
             primary: true
     runs-on: ${{ matrix.os }}
     outputs:
@@ -48,6 +49,17 @@ jobs:
       run: |
         npm run lint
         npm t
+    - name: Setup Docker
+      # taken from https://github.com/docker/github-actions/blob/0f18e2abad9a4ac2963d2516246787375b5ec917/Dockerfile#L32
+      run: curl -fL https://download.docker.com/linux/static/stable/x86_64/docker-20.10.4.tgz | tar xzO docker/docker > docker && sudo mv -f docker /usr/bin/docker && sudo chmod +x /usr/bin/docker
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v2
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+    - name: Build container image
+      run: make packageLocalDocker
+    - name: Smoke test
+      run: make testDocker
     - name: Build binary
       run: |
         npm run build

.github/workflows/release.yml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 14
+          node-version: 16
       # libgbm-dev is required by Puppeteer 3+
       - name: Install system dependencies
         run: |
@@ -33,7 +33,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 14
+          node-version: 16
       # libgbm-dev is required by Puppeteer 3+
       - name: Install system dependencies
         run: |

Dockerfile

@@ -0,0 +1,43 @@
+# Package the Node.js project into a single binary
+FROM --platform=${TARGETPLATFORM:-linux/amd64} node:16.16.0-alpine3.16 as builder
+
+# Workaround: https://github.com/nodejs/docker-node/issues/813#issuecomment-407339011
+# Error: could not get uid/gid
+# [ 'nobody', 0 ]
+RUN npm config set unsafe-perm true
+
+RUN npm install --location=global pkg@5.6.0 pkg-fetch@3.3.0
+
+ENV NODE node16
+ENV PLATFORM alpine
+RUN /usr/local/bin/pkg-fetch -n ${NODE} -p ${PLATFORM} -a $([ "$TARGETARCH" == "amd64" ] && echo "x64" || echo "$TARGETARCH")
+
+COPY package.json package-lock.json /app/
+COPY lib /app/lib
+COPY bin /app/bin
+COPY css /app/css
+WORKDIR /app
+
+RUN PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=1 npm ci
+
+RUN /usr/local/bin/pkg bin/asciidoctor-web-pdf --config package.json --targets ${NODE}-${PLATFORM}-$([ "$TARGETARCH" == "amd64" ] && echo "x64" || echo "$TARGETARCH") -o app.bin
+
+# Create the image
+FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine:3.16.1
+
+RUN addgroup -g 1000 asciidoctor && adduser -D -G asciidoctor -u 1000 asciidoctor
+
+RUN apk add --quiet --no-cache --update chromium font-noto-emoji ttf-freefont font-noto \
+     && fc-cache -f
+
+COPY --chown=asciidoctor:asciidoctor --from=builder /app/app.bin /usr/bin/asciidoctor-web-pdf
+COPY --chown=asciidoctor:asciidoctor --from=builder /app/node_modules/mathjax/es5 /usr/bin/assets/mathjax
+
+ENV PUPPETEER_EXECUTABLE_PATH=/usr/lib/chromium/chrome
+
+RUN mkdir /usr/app && chown asciidoctor:asciidoctor /usr/app
+
+USER asciidoctor
+WORKDIR /usr/app
+
+ENTRYPOINT ["/usr/bin/asciidoctor-web-pdf"]

Makefile

@@ -0,0 +1,25 @@
+MULTI_ARCH_AVAILABLE := $(shell docker buildx inspect | grep amd64 | grep arm64 > /dev/null 2>&1; echo $$?)
+
+.PHONY: packageDocker publishDocker
+
+default: packageDocker
+
+packageDocker:
+ifeq ($(MULTI_ARCH_AVAILABLE), 0)
+	docker buildx build --tag asciidoctor-web-pdf:latest -o type="image,push=false" --platform linux/amd64,linux/arm64 .
+else
+	docker build -t asciidoctor-web-pdf .
+endif
+
+packageLocalDocker:
+	docker build -t asciidoctor-web-pdf:latest .
+
+testDocker:
+	echo "= Test" | docker run -i --rm asciidoctor-web-pdf:latest -a reproducible - > test/output/docker-smoke-test.pdf
+	md5sum -c test/docker-smoke-test.md5sum
+
+publishDocker:
+ifndef RELEASE_VERSION
+	$(error RELEASE_VERSION is undefined)
+endif
+	docker buildx build --push --platform linux/amd64,linux/arm64 --tag asciidoctor-web-pdf:latest --tag asciidoctor-web-pdf:${RELEASE_VERSION} .

README.md

@@ -192,6 +192,48 @@ Verify that the `asciidoctor-web-pdf` command is available on your `PATH` by run
 $ yarn global add @asciidoctor/core asciidoctor-pdf
 ```
 
+### Using Docker
+
+Currently, the Docker image is not yet published on [Docker Hub](https://hub.docker.com/).
+Therefore, you will need to build the Docker image from the Dockerfile.
+
+To build the Docker image, clone this repository and type the following commands: 
+
+```bash
+docker build . -t asciidoctor-web-pdf:latest
+```
+
+**NOTE:** If `make` is installed on your system you can use: `make packageLocalDocker` 
+
+Verify that the Docker image is working by running:
+
+```bash
+docker run --rm asciidoctor-web-pdf --version
+
+Asciidoctor Web PDF 1.0.0-alpha.14 using Asciidoctor.js 2.2.6 (Asciidoctor 2.0.17) [https://asciidoctor.org]
+Runtime Environment (node v16.17.0 on linux)
+CLI version 3.5.0
+```
+
+If you want to render the cheatsheet example, move to the root of this repository and type:
+
+```bash
+docker run -i --rm \
+  --volume=$PWD/examples/cheat-sheet:"/usr/app" \
+  -u $(id -u ${USER}):$(id -g ${USER}) \
+  asciidoctor-web-pdf:latest \
+  --template-require ./snyk/template.js maven-security-cheat-sheet.adoc 
+```
+
+The `--volume` option will mount your local copy of the Asciidoctor Web PDF repository on the container.
+Since it is a non-root user we have to map our user to `asciidoctor` user in the container.
+
+You can also use `stdin` and `stdout` without the need of volumes.
+
+```bash
+cat examples/document/basic-example.adoc | docker run -i --rm asciidoctor-web-pdf:latest - > doc.pdf
+```
+
 ## Get started
 
 Asciidoctor Web PDF provides a standard document layout.

package.json

@@ -30,7 +30,7 @@
     "test:js": "mocha test/**_test.js",
     "lint": "standard lib/**.js test/**.js tasks/**js",
     "publish": "node tasks/publish.js",
-    "test:update-linux-reference": "docker build -f test/Dockerfile -t asciidoctor-web-pdf/test . && docker run --name asciidoctorwebpdftest asciidoctor-web-pdf/test:latest; docker cp asciidoctorwebpdftest:/app/test/output/. ./test/reference/linux/ && docker rm asciidoctorwebpdftest"
+    "test:update-linux-reference": "docker build -f test/Dockerfile -t asciidoctor/web-pdf-test . && docker run --name asciidoctorwebpdftest asciidoctor/web-pdf-test:latest; docker cp asciidoctorwebpdftest:/app/test/output/. ./test/reference/linux/ && docker rm asciidoctorwebpdftest"
   },
   "repository": {
     "type": "git",

test/docker-smoke-test.md5sum

@@ -0,0 +1 @@
+67b7ee0303907fdd271dd80df8aab3a8  test/output/docker-smoke-test.pdf