wip: dir organisation, script cleanup

scripts/install/30-docker.sh

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+DOCKER_FOLDER="$HOME/.docker"
+if not_installed "docker"; then
+    mkdir -p "$DOCKER_FOLDER"
+
+    # Requirements
+    install apt-transport-https ca-certificates curl gnupg-agent \
+        software-properties-common
+
+    # Add repository
+    distro=$(lsb_release -si | tr "[:upper:]" "[:lower:]") # cast to lowercase
+    add_key "https://download.docker.com/linux/$distro/gpg" \
+        "gnupg-ring:/etc/apt/trusted.gpg.d/docker-apt-key.gpg"
+    sudo add-apt-repository -y \
+        "deb [arch=amd64] https://download.docker.com/linux/$distro \
+        $(lsb_release -cs) \
+        stable"
+    update
+
+    # Install
+    install docker-ce
+
+    # Chown
+    sudo chown "$USER":"$USER" "$DOCKER_FOLDER" -R
+    sudo chmod g+rwx "$DOCKER_FOLDER" -R
+
+fi
+docker --version
+
+if not_installed "docker-compose"; then
+    pip3 install --user docker-compose
+fi
+pip3 install --upgrade docker-compose
+docker-compose --version
+
+readonly docker_group="docker"
+if ! grep -q "$docker_group" /etc/group; then
+    sudo groupadd "$docker_group"
+fi
+
+if ! groups "$USER" | grep -q "\b$docker_group\b"; then
+    sudo usermod -aG docker "$USER"
+fi