# Docker Useful staff for Docker and not only. # Free Space from Docker container. The below commands are useful to free up space from containers leave unused images, volumes, networks, logs. From the cli where there is Docker installed run the below commands. ##### Commands ```bash docker image prune -f -a docker system prune --volumes -f -a find /var/lib/docker/containers/ -type f -name "*.log" -delete ``` ##### Download script Or you can download the below shell script and add a Cron Job to run every 1 hour. Download : **[docker-freeup-space.sh](https://docs.greenhome.stream/attachments/10 "Docker Free up Space")** ##### Cron Job Run crontab to add the job. ```bash crontab -e ``` Then go to the end of the lines and add the below. ``` 0 * * * * /path-of-the-script/docker-freeup-space.sh ``` Save and Exit Done. **Ins0mniA** # Useful Docker commands ##### Stop all Docker containers To stop all Docker containers from the command line, you can use the following command: ```bash docker stop $(docker ps -q) ``` **Explanation:** - **docker ps -q**: This command lists the container IDs of all running containers. - **docker stop**: This stops the containers provided as arguments. So, **$(docker ps -q)** will pass all running container IDs to docker stop, effectively stopping all of them. ##### Remove ALL Docker containers Networks **WARNING (USED / UNUSED Networks)** This will remove all Networks from ALL container even the one you use. ```bash docker network rm $(docker network ls -q) ``` **Explanation:** - **docker network ls -q**: Lists all network IDs (including those that are in use). - **docker network rm**: Removes networks by their IDs. This will attempt to remove all networks, including the default ones if they are not in use by containers. *However, if a network is in use by a container, Docker won't allow you to remove it* without first disconnecting the containers. If you really want to remove all networks including the ones in use, you'd have to stop and remove the containers using those networks first. ##### Remove all Docker volumes (including unused ones) To remove all Docker volumes (including unused ones), you can use the following command: ```bash docker volume prune -f -a ``` **Explanation:** - **docker volume prune**: Removes all unused volumes (volumes that are not currently associated with any container). - **-f or --force**: This flag forces the operation without asking for confirmation. - **-a or --all**: Remove all unused volumes, not just anonymous ones If you want to remove all volumes — even the ones in use by containers (which is dangerous and typically not recommended) — you'd need to remove the containers and then delete the volumes. **Here's how you can do it:** **1. Stop and remove all containers:** ```bash docker stop $(docker ps -q) docker rm $(docker ps -aq) ``` **2. Remove all volumes:** ```bash docker volume rm $(docker volume ls -q) ``` **Caution:** - Removing volumes that are in use by containers can result in data loss, as volumes often contain persistent data for applications running in containers. - Always double-check what volumes are being used and whether you need to keep any before removing them. ##### Remove all Docker images (including images that are not being used by any containers) To remove all unused images (not in use by any container), including dangling images, you can run: ```bash docker image prune -f -a ``` **Explanation:** - **docker image prune**: This will remove all dangling images. - **-f or --force**: This flag forces the operation without asking for confirmation. - **-a or --all**: Remove all unused images, not just anonymous ones To remove all Docker images (including images that are not being used by any containers), you can use the following command: ```bash docker rmi $(docker images -q) ``` **Explanation:** - **docker images -q**: Lists the IDs of all images on your system. - **docker rmi**: Removes the images by their IDs. **If you have containers using some of these images:** If there are containers still using these images, *Docker will not let you remove them. To force removal*, you'd need to stop and remove the containers first. **Here's how to do it:** **1. Stop all running containers:** ```bash docker stop $(docker ps -q) ``` **2. Remove all containers:** ```bash docker rm $(docker ps -aq) ``` **3. Remove all images:** ```bash docker rmi $(docker images -q) ``` **Caution:** - Removing all images will mean you lose access to those images unless you pull them again, and you may need to rebuild any images you were working on. - Double-check before running these commands if you're in a production environment, as this can disrupt your workflows! ##### Remove all stacks of containers in Docker To remove all stacks of containers in Docker, you'll typically be dealing with Docker Swarm. A stack in Docker refers to a collection of services deployed in a Docker Swarm, often using docker stack deploy. If you want to remove all stacks (and the services, networks, and containers associated with them), you can do so with the following command: ```bash docker stack rm $(docker stack ls -q) ``` **Explanation:** - **docker stack ls -q**: Lists the names of all deployed stacks. - **docker stack rm**: Removes the stack by name, along with the services and containers related to it. This will remove all stacks deployed in your Docker Swarm environment. **Important Notes:** - This command removes the entire stack — containers, networks, services, and volumes that are part of the stack will be removed. - If you only want to remove specific stacks, replace $(docker stack ls -q) with the name of the stack you want to remove. **Ins0mniA** # Install Docker on Debian #### 🚀 One-Line Download & Execute ```bash apt install -y curl && curl -sSL https://docs.greenhome.stream/attachments/37 -o install_docker_portainer.sh && chmod +x install_docker_portainer.sh && ./install_docker_portainer.sh ``` ### Method A : #### 1. Install Docker on Debian 12 Before you install Docker Compose and Portainer, ensure that Docker is installed on your Debian 12 system. ##### Step 1: Update and Install Dependencies ```bash apt update apt install -y apt-transport-https ca-certificates curl ``` ##### Step 2: Add Docker’s Official GPG Key ```bash curl -fsSL https://download.docker.com/linux/debian/gpg | tee /etc/apt/trusted.gpg.d/docker.asc ``` ##### Step 3: Add Docker's Official Repository ```bash echo "deb [arch=amd64] https://download.docker.com/linux/debian $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list ``` ##### Step 4: Install Docker ```bash apt update apt install -y docker-ce docker-ce-cli containerd.io ``` ##### Step 5: Verify Docker Installation ```bash docker --version ``` ### Method B : #### 2. Install Docker Compose and Enable APT Updates ##### Step 1: Add Docker Compose APT Repository Docker Compose is not included in the default Debian repositories, but you can use Docker’s official repository for Compose. Create a Docker Compose APT repository source: ```bash echo "deb [arch=amd64] https://download.docker.com/linux/debian $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list ``` ##### Step 2: Install Docker Compose Now, install Docker Compose from Docker's APT repository: ```bash apt update apt install -y docker-compose-plugin ``` This version of Docker Compose (the plugin version) integrates directly into the Docker CLI and will update with**` apt update `**and` apt upgrade.` ##### Step 3: Verify Docker Compose Installation ```bash docker compose version ``` --- ### Method C : #### 3. Install Portainer Using Docker Compose (Optional) Portainer is a popular web UI to manage Docker environments. You can easily deploy it using Docker Compose. ##### Step 1: Create the docker-compose.yml File Create a` docker-compose.yml `file in a directory where you want to manage Portainer. You can place it anywhere you like, but let’s say you create a directory called` portainer `: ```bash mkdir -p ~/portainer cd ~/portainer ``` Now create the docker-compose.yml file using your favorite editor: ```bash nano docker-compose.yml ``` Paste the following content for the Portainer setup: ```yaml version: "3.9" services: portainer: image: portainer/portainer-ce:latest container_name: portainer restart: always networks: - portainer_network volumes: - /var/run/docker.sock:/var/run/docker.sock - portainer_data:/data ports: - 9000:9000 environment: - TZ=Europe/Athens # Set your timezone networks: portainer_network: driver: bridge volumes: portainer_data: driver: local ``` ##### Step 2: Start Portainer Once the` docker-compose.yml `file is ready, run the following command to start Portainer : ```bash docker compose up -d ``` This will pull the Portainer image, create the necessary containers, and start the Portainer web UI. You can now access it by going to `http://:9000 `in your web browser. ##### Step 3: Access Portainer When you visit Portainer for the first time, you'll be prompted to set up an admin account. After that, you can start managing your Docker environment through the web interface. --- ### Method D : #### 1. Install Docker ##### Step 1: Install docker using the official script, by executing the below command. ```bash curl -fsSL https://get.docker.com | sh ``` --- ### Check Update : #### 4. Ensure Automatic Updates for Docker and Docker Compose Since you added Docker’s official repositories, Docker Compose will be updated via the same process as Docker itself when you run : ```bash apt update && apt upgrade -y ``` #### Summary 1. **Docker** : Installed and running using the official Docker repositories. 2. **Docker Compose** : Installed via Docker's APT repository and integrated with Docker. 3. **Portainer** : Deployed using Docker Compose, with an example` docker-compose.yml `file to start the Portainer service. You should now have Docker, Docker Compose, and Portainer running on Debian 12, with updates managed through` apt `. ### Download the files #### Script universal-health-monitor.sh Attachment link : [install\_docker\_portainer.sh](https://docs.greenhome.stream/attachments/37 "Install Docker Portainer") **Ins0mniA** # Install Docker ANY Linux Distro # Docker Installer & Verifier A production-ready bash script that detects whether Docker is already installed and, if not, installs Docker CE + the Docker Compose plugin using the official repository for your Linux distribution. ##### 🚀 One-Line Download & Execute : ```bash apt update && apt install -y curl && clear && curl -s https://docs.greenhome.stream/attachments/69 | bash ``` --- ## 🇬🇧 English ### Features - **Smart detection** — if Docker and Compose are already installed and working, the script exits cleanly without touching anything. - **Multi-distro support** — Debian, Ubuntu, Raspberry Pi OS, Fedora, RHEL, Rocky, AlmaLinux, CentOS, Arch, Manjaro, openSUSE, SLES, Alpine. - **Real verification at every step** — binary presence, daemon reachability, Compose plugin, and a final `hello-world` container run. - **Auto-installs missing dependencies** (`curl`, `gnupg`, `lsb-release`, etc.) before touching Docker. - **Colored output**: orange `[PROC]`, green `[ OK ]`, red `[FAIL]`, cyan `[INFO]`. - **Idempotent** — safe to run multiple times. - **Sudo-aware** — works as root or as a regular user with sudo. - **Adds your user to the `docker` group** so you don't need `sudo docker` after logout/login. ### Requirements - A supported Linux distribution (see above). - Either root access or a user in the `sudo` group. - Internet connection (to reach the Docker repository). ### Usage Download and run: ```bash curl -fsSL -o install-docker.sh https://example.com/install-docker.sh chmod +x install-docker.sh ./install-docker.sh ``` Or if you already have it locally: ```bash chmod +x install-docker.sh ./install-docker.sh ``` ### What it does, step by step 1. **Clears the screen** and shows a banner. 2. **Sets up sudo** — uses root if already root, otherwise requires sudo. 3. **Detects OS family** via `/etc/os-release` and picks the right package manager. 4. **Checks if Docker is installed** — verifies the binary, the daemon, and the Compose plugin. 5. If **everything is OK** → exits with a green success message. Nothing is installed. 6. If **only Compose is missing** → installs only the Compose plugin. 7. If **Docker is missing** → adds the official Docker repository for your distro, installs `docker-ce`, `docker-ce-cli`, `containerd.io`, `docker-buildx-plugin`, `docker-compose-plugin`, enables and starts the service, runs `hello-world` as a final sanity check, and adds your user to the `docker` group. ### Exit codes - `0` — success (either already installed or freshly installed). - Any non-zero — a step failed; a red `[FAIL]` message explains what. ### Troubleshooting - **"permission denied" after install** — log out and log back in so the new `docker` group membership takes effect, or run `newgrp docker`. - **Behind a proxy** — export `HTTP_PROXY`/`HTTPS_PROXY` before running the script. - **Old Docker from distro repo** — uninstall `docker.io` / `podman-docker` first with your package manager, then re-run this script to get the official Docker CE. --- ## 🇬🇷 Ελληνικά ### Χαρακτηριστικά - **Έξυπνος εντοπισμός** — αν το Docker και το Compose είναι ήδη εγκατεστημένα και λειτουργούν, το script τερματίζει καθαρά χωρίς να αγγίξει τίποτα. - **Υποστήριξη πολλών διανομών** — Debian, Ubuntu, Raspberry Pi OS, Fedora, RHEL, Rocky, AlmaLinux, CentOS, Arch, Manjaro, openSUSE, SLES, Alpine. - **Πραγματική επαλήθευση σε κάθε βήμα** — ύπαρξη binary, προσβασιμότητα daemon, Compose plugin, και τελικό τρέξιμο του `hello-world`. - **Αυτόματη εγκατάσταση εξαρτήσεων** (`curl`, `gnupg`, `lsb-release` κ.λπ.) πριν την εγκατάσταση του Docker. - **Έγχρωμη έξοδος**: πορτοκαλί `[PROC]`, πράσινο `[ OK ]`, κόκκινο `[FAIL]`, κυανό `[INFO]`. - **Idempotent** — ασφαλές να τρέξει πολλές φορές. - **Υποστηρίζει sudo** — λειτουργεί ως root ή ως κανονικός χρήστης με sudo. - **Προσθέτει τον χρήστη σας στην ομάδα `docker`** ώστε να μη χρειάζεται `sudo docker` μετά από logout/login. ### Προϋποθέσεις - Υποστηριζόμενη διανομή Linux (βλ. παραπάνω). - Πρόσβαση root ή χρήστης στην ομάδα `sudo`. - Σύνδεση στο διαδίκτυο (για πρόσβαση στο αποθετήριο του Docker). ### Χρήση Κατεβάστε και τρέξτε: ```bash curl -fsSL -o install-docker.sh https://example.com/install-docker.sh chmod +x install-docker.sh ./install-docker.sh ``` Ή, αν το έχετε ήδη τοπικά: ```bash chmod +x install-docker.sh ./install-docker.sh ``` ### Τι κάνει, βήμα προς βήμα 1. **Καθαρίζει την οθόνη** και εμφανίζει banner. 2. **Ρυθμίζει sudo** — χρησιμοποιεί root αν είστε ήδη root, διαφορετικά απαιτεί sudo. 3. **Εντοπίζει την οικογένεια OS** μέσω του `/etc/os-release` και επιλέγει τον κατάλληλο package manager. 4. **Ελέγχει αν είναι εγκατεστημένο το Docker** — επαληθεύει binary, daemon, και το Compose plugin. 5. Αν **όλα είναι εντάξει** → τερματίζει με πράσινο μήνυμα επιτυχίας. Δεν εγκαθιστά τίποτα. 6. Αν **λείπει μόνο το Compose** → εγκαθιστά μόνο το Compose plugin. 7. Αν **λείπει το Docker** → προσθέτει το επίσημο αποθετήριο Docker για τη διανομή σας, εγκαθιστά `docker-ce`, `docker-ce-cli`, `containerd.io`, `docker-buildx-plugin`, `docker-compose-plugin`, ενεργοποιεί και ξεκινά την υπηρεσία, τρέχει το `hello-world` ως τελικό έλεγχο, και προσθέτει τον χρήστη στην ομάδα `docker`. ### Κωδικοί εξόδου - `0` — επιτυχία (είτε ήταν ήδη εγκατεστημένο, είτε εγκαταστάθηκε τώρα). - Οτιδήποτε άλλο — κάποιο βήμα απέτυχε· ένα κόκκινο `[FAIL]` μήνυμα εξηγεί τι. ### Αντιμετώπιση προβλημάτων - **"permission denied" μετά την εγκατάσταση** — κάντε logout/login ώστε να εφαρμοστεί η νέα συμμετοχή στην ομάδα `docker`, ή τρέξτε `newgrp docker`. - **Πίσω από proxy** — ορίστε `HTTP_PROXY`/`HTTPS_PROXY` πριν τρέξετε το script. - **Παλιό Docker από το αποθετήριο της διανομής** — απεγκαταστήστε πρώτα το `docker.io` / `podman-docker` με τον package manager σας, και μετά ξανατρέξτε αυτό το script για να πάρετε το επίσημο Docker CE. --- ## License MIT — use, modify, and redistribute freely.