Alpine-Laverna

Container for Alpine Linux + NGINX + Laverna

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This image containerizes the prebuilt version of Laverna Note-taking static webapp.

Based on Alpine Linux from my alpine-nginx image with NGINX and the s6 init system overlayed in it.

Auto updated according to the Github branch gh-pages.

The image is tagged respectively for the following architectures,

• armhf
• x86_64 (retagged as the latest )

armhf builds have embedded binfmt_misc support and contain the qemu-user-static binary that allows for running it also inside an x64 environment that has it.

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Get the Image

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Pull the image for your architecture it's already available from Docker Hub.

# make pull
docker pull woahbase/alpine-laverna:x86_64

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Configuration Defaults

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• laverna is located at the endpoint /laverna/, with configurations at /config/www/laverna/ and data at /config/www/laverna/data/. Uploaded images go to /config/www/laverna/uploads.

• These configurations are inherited from the nginx image:

  • Drop privileges to alpine whenever configured to. Respects PUID / PGID.

  • Binds to both http(80) and https(443). Publish whichever you need, or both.

  • Default configs setup a static site at / by copying /defaults/index.html at the webroot location /config/www/. Mount the /config/ locally to persist modifications (or your webapps). NGINX configs are at /config/nginx, and vhosts at /config/nginx/site-confs/.

  • 4096bit Self-signed SSL certificate is generated in first run at /config/keys. Pass the runtime variable SSLSUBJECT with a valid info string to make your own.

  • .htpasswd is generated with default credentials admin/insecurebydefault at /config/keys/.htpasswd

  • Sets up a https and auth protected web location at /secure.

  • If you're proxying multiple containers at the same host, or reverse proxying multiple hosts at the same container, you may need to add --net=host and/or add entries in your firewall to allow traffic.

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Run

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If you want to run images for other architectures, you will need to have binfmt support configured for your machine. multiarch, has made it easy for us containing that into a docker container.

# make regbinfmt
docker run --rm --privileged multiarch/qemu-user-static:register --reset

Without the above, you can still run the image that is made for your architecture, e.g for an x86_64 machine..

Running make starts the service.

# make
docker run --rm -it \
  --name docker_laverna --hostname laverna \
  -e PGID=1000 -e PUID=1000 \
  -c 256 -m 256m \
  -p 80:80 -p 443:443 \
  -v config:/config \
  -v /etc/hosts:/etc/hosts:ro \
  -v /etc/localtime:/etc/localtime:ro \
  woahbase/alpine-laverna:x86_64

Stop the container with a timeout, (defaults to 2 seconds)

# make stop
docker stop -t 2 docker_laverna

Removes the container, (always better to stop it first and -f only when needed most)

# make rm
docker rm -f docker_laverna

Restart the container with

# make restart
docker restart docker_laverna

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Shell access

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Get a shell inside a already running container,

# make shell
docker exec -it docker_laverna /bin/bash

set user or login as root,

# make rshell
docker exec -u root -it docker_laverna /bin/bash

To check logs of a running container in real time

# make logs
docker logs -f docker_laverna

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Development

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If you have the repository access, you can clone and build the image yourself for your own system, and can push after.

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Setup

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Before you clone the repo, you must have Git, GNU make, and Docker setup on the machine.

git clone https://github.com/woahbase/alpine-laverna
cd alpine-laverna

You can always skip installing make but you will have to type the whole docker commands then instead of using the sweet make targets.

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Build

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You need to have binfmt_misc configured in your system to be able to build images for other architectures.

Otherwise to locally build the image for your system. [ARCH defaults to x86_64, need to be explicit when building for other architectures.]

# make ARCH=x86_64 build
# sets up binfmt if not x86_64
docker build --rm --compress --force-rm \
  --no-cache=true --pull \
  -f ./Dockerfile_x86_64 \
  --build-arg ARCH=x86_64 \
  --build-arg DOCKERSRC=alpine-nginx \
  --build-arg PGID=1000 \
  --build-arg PUID=1000 \
  --build-arg USERNAME=woahbase \
  -t woahbase/alpine-laverna:x86_64 \
  .

To check if its working..

# make ARCH=x86_64 test
docker run --rm -it \
  --name docker_laverna --hostname laverna \
  -e PGID=1000 -e PUID=1000 \
  woahbase/alpine-laverna:x86_64 \
  sh -ec 'nginx -v'

And finally, if you have push access,

# make ARCH=x86_64 push
docker push woahbase/alpine-laverna:x86_64

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Maintenance

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Sources at Github. Built at Travis-CI.org (armhf / x64 builds). Images at Docker hub. Metadata at Microbadger.

Maintained by WOAHBase.