This image containerizes Blynk IOT server, a platform for visualizing/controlling microcontrollers like Arduino, RaspberryPi etc that use their library, over the web, running under OpenJDK 8.*.*.
Based on Alpine Linux from my alpine-openjdk8 image with the s6 init system and GNU LibC overlayed in it.
Auto updated according to the Github releases.
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.
Pull the image for your architecture it's already available from Docker Hub.
# make pull
docker pull woahbase/alpine-blynk:x86_64
-
Blynk home is at
/opt/blynk
. User data is at/opt/blynk/data
. Mount this directory in local to persist blynk configuration data. -
Default configurations for server and mail is provided right inside the Blynk home directory as
/opt/blynk/server.properties
and/opt/blynk/mail.properties
. Edit or remount these files to use custom configurations. -
By default, Blynk binds to the following ports :
- 7443: Administration UI HTTPS port
- 8080: HTTP port
- 8081: Web socket ssl/tls port
- 8082: Web sockets plain tcp/ip port
- 8441: Hardware ssl/tls port (for hardware that supports SSL/TLS sockets)
- 8442: Hardware plain tcp/ip port
- 8443: Application mutual ssl/tls port
- 9443: HTTPS port
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..
This image already has a user alpine
configured to drop
privileges to the passed PUID
/PGID
which is ideal if its used
to run in non-root mode. That way you only need to specify the
values at runtime and pass the -u alpine
if need be. (run id
in your terminal to see your own PUID
/PGID
values.)
Running make
starts the service.
# make
docker run --rm -it \
--name docker_blynk --hostname blynk \
-e PGID=1000 -e PUID=1000 \
-p 7443:7443 -p 8080:8080 \
-p 8081:8081 -p 8082:8082 \
-p 8441:8441 -p 8442:8442 \
-p 8443:8443 -p 9443:9443 \
-v /etc/localtime:/etc/localtime:ro \
woahbase/alpine-blynk:x86_64
Stop the container with a timeout, (defaults to 2 seconds)
# make stop
docker stop -t 2 docker_blynk
Removes the container, (always better to stop it first and -f
only when needed most)
# make rm
docker rm -f docker_blynk
Restart the container with
# make restart
docker restart docker_blynk
Get a shell inside a already running container,
# make shell
docker exec -it docker_blynk /bin/bash
set user or login as root,
# make rshell
docker exec -u root -it docker_blynk /bin/bash
To check logs of a running container in real time
# make logs
docker logs -f docker_blynk
If you have the repository access, you can clone and build the image yourself for your own system, and can push after.
Before you clone the repo, you must have Git, GNU make, and Docker setup on the machine.
git clone https://github.com/woahbase/alpine-blynk
cd alpine-blynk
You can always skip installing make but you will have to type the whole docker commands then instead of using the sweet make targets.
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-openjdk8 \
--build-arg USERNAME=woahbase \
-t woahbase/alpine-blynk:x86_64 \
.
To check if its working..
# make ARCH=x86_64 test
docker run --rm -it \
--name docker_blynk --hostname blynk \
-e PGID=1000 -e PUID=1000 \
woahbase/alpine-blynk:x86_64 \
sh -ec 'sleep 5; java -version; cat /opt/blynk/version'
And finally, if you have push access,
# make ARCH=x86_64 push
docker push woahbase/alpine-blynk:x86_64
Sources at Github. Built at Travis-CI.org (armhf / x64 builds). Images at Docker hub. Metadata at Microbadger.
Maintained by WOAHBase.