add README.md detailed instruction of this repo

README.md

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+# Docker Images Repo
+
+repo for storage any useful SaaS oriented on containers -> Enjoy!
+
+## Docker & Docker Compose Installation
+
+firstly you need docker:
+
+```bash
+apt-get install docker.io
+yum install docker.io
+pacman -S docker
+```
+
+next step is docker-compose installation:
+
+```bash
+sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
+sudo chmod +x /usr/local/bin/docker-compose
+docker-compose --version
+```
+
+## Docker & Docker Compose Configure
+
+you can use docker / docker-compose with sudo but you can add your user to ```docker``` group, and use docker straightly, like that:
+
+```bash
+sudo groupadd docker
+sudo usermod -aG docker $USER
+```
+
+also important thing is configure systemctl for running docker on boot with systemd:
+
+```bash
+sudo systemctl enable docker.service && sudo systemctl enable docker
+sudo systemctl start docker
+sudo systemctl status docker
+```
+
+otherwise you can disable docker auto runner with systemd:
+```bash
+sudo systemctl disable docker.service && sudo systemctl disable docker
+```
+
+## Docker Cleaning
+
+you can clean docker objects separetly, but removing every objects are more comfortable:
+
+```bash
+docker system prune --volumes
+```
+
+
+