dockerised tests

install/20-docker.sh

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+#!/usr/bin/env bash
+#
+# After running this script:
+#   1. docker is installed
+#   2. docker-compose if installed
+#   3. docker group exists
+#   4. user is in docker group
+#
+
+# 1. docker is installed
+if not_installed "docker"; then
+
+    printf "Installing docker...\n"
+
+    # Requirements
+    install apt-transport-https ca-certificates curl gnupg-agent \
+        software-properties-common
+
+    # Add repository
+    add_key "https://download.docker.com/linux/ubuntu/gpg"
+    sudo add-apt-repository -y \
+        "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
+        $(lsb_release -cs) \
+        stable"
+    update
+
+    # Install
+    install docker-ce
+
+    # Chown
+    sudo chown "$USER":"$USER" "$HOME/.docker" -R
+    sudo chmod g+rwx "$HOME/.docker" -R
+
+fi
+printf "docker is installed\n"
+docker --version
+
+# 2. docker-compose if installed
+if not_installed "docker-compose"; then
+
+    printf "Installing docker-compose...\n"
+
+    # Docker-compose
+    pip3 install --user docker-compose
+
+
+fi
+printf "docker-compose is installed, upgrading\n"
+pip3 install --upgrade docker-compose
+docker-compose --version
+
+# 3. docker group exists
+readonly docker_group='docker'
+if ! grep -q "$docker_group" /etc/group; then
+    sudo groupadd "$docker_group"
+fi
+printf "group '$docker_group' is created\n"
+
+# 4. user is in docker group
+if ! groups "$USER" | grep -q "\b$docker_group\b"; then
+    sudo usermod -aG docker "$USER"
+fi
+printf "user '$USER' is in '$docker_group' group\n"