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    curl -fsSL -o
    sudo sh
# Executing docker install script, commit: 7cae5f8b0decc17d6571f9f52eb840fbc13b2737
+ sh -c apt-get update -qq >/dev/null
+ sh -c DEBIAN_FRONTEND=noninteractive apt-get install -y -qq apt-transport-https ca-certificates curl >/dev/null
+ sh -c curl -fsSL "" | apt-key add -qq - >/dev/null
Warning: apt-key output should not be parsed (stdout is not a terminal)
+ sh -c echo "deb [arch=amd64] focal stable" > /etc/apt/sources.list.d/docker.list
+ sh -c apt-get update -qq >/dev/null
+ [ -n  ]
+ sh -c apt-get install -y -qq --no-install-recommends docker-ce >/dev/null
+ [ -n 1 ]
+ sh -c DEBIAN_FRONTEND=noninteractive apt-get install -y -qq docker-ce-rootless-extras >/dev/null
+ sh -c docker version
Client: Docker Engine - Community
 Version:           20.10.7
 API version:       1.41
 Go version:        go1.13.15
 Git commit:        f0df350
 Built:             Wed Jun  2 11:56:38 2021
 OS/Arch:           linux/amd64
 Context:           default
 Experimental:      true

Server: Docker Engine - Community
  Version:          20.10.7
  API version:      1.41 (minimum version 1.12)
  Go version:       go1.13.15
  Git commit:       b0f5bc3
  Built:            Wed Jun  2 11:54:50 2021
  OS/Arch:          linux/amd64
  Experimental:     false
  Version:          1.4.6
  GitCommit:        d71fcd7d8303cbf684402823e425e9dd2e99285d
  Version:          1.0.0-rc95
  GitCommit:        b9ee9c6314599f1b4a7f497e1f1f856fe433d3b7
  Version:          0.19.0
  GitCommit:        de40ad0


To run Docker as a non-privileged user, consider setting up the
Docker daemon in rootless mode for your user: install

Visit to learn about rootless mode.

To run the Docker daemon as a fully privileged service, but granting non-root
users access, refer to

WARNING: Access to the remote API on a privileged Docker daemon is equivalent
         to root access on the host. Refer to the 'Docker daemon attack surface'
         documentation for details:


Remove all containers

docker rm -f $(docker ps -a -q)

Eclipse Mosquitto MQTT

mkdir -p docker/mosquitto
cd docker/mosquitto
mkdir -p config data log

cd config
cat << EOF > mosquitto.conf
allow_anonymous true

listener 1883
protocol mqtt

listener 9001
protocol websockets

persistence true
persistence_location /mosquitto/data/
log_dest file /mosquitto/log/mosquitto.log

cd ../..
docker run -it \
    --name mosquitto \
    -p 1883:1883 \
    -p 9001:9001 \
    -v $PWD/mosquitto/config/mosquitto.conf:/mosquitto/config/mosquitto.conf \
    -v /mosquitto/data \
    -v /mosquitto/log \


mkdir -p docker/redis/data

docker run \
    --name redis \
    -p 6379:6379 \
    -v $PWD/docker/redis/data:/data \
    -d redis:6.2.4 redis-server \
    --appendonly yes

Tagging Docker images the right way

Spoiler alerts: use the commit hash as the image tag

git log -1 --pretty=%H


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