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bash <(curl -s https://cdn.albert.lol/docker.sh)

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docker.sh

@@ -5,7 +5,7 @@
5 5 #
6 6 # Usage:
7 7 # ./docker.sh
8 - # curl -fsSL https://cdn.albert.lol/docker.sh | bash
8 + # bash <(curl -s https://cdn.albert.lol/docker.sh)
9 9 #
10 10 # Requires:
11 11 # - Running on a Debian-based system (Debian, Ubuntu, etc.)

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1 file changed, 2 insertions, 5 deletions

docker.sh

@@ -202,8 +202,5 @@ main() {
202 202 log_success "-----------------------------------------------------"
203 203 }
204 204
205 - # Run the main function if the script is executed directly
206 - # This check prevents execution if the script is sourced, though unlikely for this use case.
207 - if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
208 - main
209 - fi
205 + # Run the main function
206 + main

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1 file changed, 101 insertions, 54 deletions

docker.sh

@@ -1,6 +1,7 @@
1 1 #!/bin/bash
2 2 #
3 - # Installs Docker Engine on Debian-based Linux distributions.
3 + # Installs Docker Engine on Debian-based Linux distributions with colored output.
4 + # Runs apt operations quietly, showing high-level status messages.
4 5 #
5 6 # Usage:
6 7 # ./docker.sh
@@ -10,6 +11,7 @@
10 11 # - Running on a Debian-based system (Debian, Ubuntu, etc.)
11 12 # - User executing the script must have sudo privileges.
12 13 # - Internet connection.
14 + # - A terminal that supports ANSI color codes.
13 15
14 16 # Strict mode
15 17 set -euo pipefail
@@ -18,26 +20,45 @@ set -euo pipefail
18 20 readonly DOCKER_GPG_KEY_PATH="/etc/apt/keyrings/docker.asc"
19 21 readonly DOCKER_APT_SOURCE_PATH="/etc/apt/sources.list.d/docker.list"
20 22
23 + # --- Colors ---
24 + # Reference: https://misc.flogisoft.com/bash/tip_colors_and_formatting
25 + readonly COLOR_RESET='\033[0m'
26 + readonly COLOR_RED='\033[0;31m'
27 + readonly COLOR_GREEN='\033[0;32m'
28 + readonly COLOR_YELLOW='\033[0;33m'
29 + readonly COLOR_BLUE='\033[0;34m'
30 + readonly COLOR_BOLD='\033[1m'
31 +
21 32 # --- Helper Functions ---
22 33
23 - # Logs an informational message.
24 - # Arguments:
25 - # $*: Message to log.
34 + # Logs an informational message (Blue).
35 + # Arguments: $*: Message to log.
26 36 log_info() {
27 - echo "[INFO] $*"
37 + echo -e "${COLOR_BLUE}[INFO]${COLOR_RESET} $*"
38 + }
39 +
40 + # Logs a success message (Green).
41 + # Arguments: $*: Message to log.
42 + log_success() {
43 + echo -e "${COLOR_GREEN}[SUCCESS]${COLOR_RESET} $*"
28 44 }
29 45
30 - # Logs an error message and exits.
31 - # Arguments:
32 - # $*: Message to log.
46 + # Logs a warning message (Yellow).
47 + # Arguments: $*: Message to log.
48 + log_warning() {
49 + echo -e "${COLOR_YELLOW}[WARNING]${COLOR_RESET} $*"
50 + }
51 +
52 + # Logs an error message (Red) and exits.
53 + # Arguments: $*: Message to log.
33 54 log_error() {
34 - echo >&2 "[ERROR] $*"
55 + # Ensure error message goes to stderr
56 + echo -e >&2 "${COLOR_RED}${COLOR_BOLD}[ERROR]${COLOR_RESET}${COLOR_RED} $*${COLOR_RESET}"
35 57 exit 1
36 58 }
37 59
38 60 # Checks if a command exists.
39 - # Arguments:
40 - # $1: Command name.
61 + # Arguments: $1: Command name.
41 62 command_exists() {
42 63 command -v "$1" >/dev/null 2>&1
43 64 }
@@ -46,13 +67,19 @@ command_exists() {
46 67
47 68 # Step 1: Update package lists and install prerequisite packages.
48 69 install_prerequisites() {
49 - log_info "Updating package list and installing prerequisites..."
50 - sudo apt-get update
51 - sudo apt-get install -y \
52 - ca-certificates \
53 - curl \
54 - gnupg
55 - log_info "Prerequisites installed."
70 + local pkgs=("ca-certificates" "curl" "gnupg")
71 + log_info "Updating package list (apt-get update)..."
72 + # Run update quietly (-qq)
73 + if ! sudo apt-get update -qq; then
74 + log_error "Failed to update package lists."
75 + fi
76 +
77 + log_info "Installing prerequisite packages: ${pkgs[*]}..."
78 + # Run install quietly (-qq) and assume yes (-y)
79 + if ! sudo apt-get install -y -qq "${pkgs[@]}"; then
80 + log_error "Failed to install prerequisite packages: ${pkgs[*]}."
81 + fi
82 + log_success "Prerequisites installed."
56 83 }
57 84
58 85 # Step 2: Set up Docker's official APT repository.
@@ -60,15 +87,20 @@ setup_apt_repository() {
60 87 log_info "Setting up Docker's APT repository..."
61 88
62 89 # Create the directory for the GPG key if it doesn't exist
63 - log_info "Creating keyring directory: /etc/apt/keyrings"
90 + log_info "Ensuring keyring directory exists: /etc/apt/keyrings"
64 91 sudo install -m 0755 -d "$(dirname "${DOCKER_GPG_KEY_PATH}")"
65 92
66 93 # Download Docker's official GPG key
67 94 log_info "Downloading Docker GPG key to ${DOCKER_GPG_KEY_PATH}"
68 95 # Use curl with fail-fast, silent, show-error, location-follow flags
69 - sudo curl -fsSL "https://download.docker.com/linux/debian/gpg" -o "${DOCKER_GPG_KEY_PATH}"
96 + # Capture curl stderr to check for errors even with -s
97 + local curl_stderr
98 + if ! curl_stderr=$(sudo curl -fsSL "https://download.docker.com/linux/debian/gpg" -o "${DOCKER_GPG_KEY_PATH}" 2>&1); then
99 + log_error "Failed to download Docker GPG key. Curl output: ${curl_stderr}"
100 + fi
70 101 # Ensure the key is readable by apt
71 102 sudo chmod a+r "${DOCKER_GPG_KEY_PATH}"
103 + log_success "Docker GPG key downloaded and permissions set."
72 104
73 105 # Detect architecture and OS codename
74 106 local arch
@@ -91,58 +123,69 @@ setup_apt_repository() {
91 123 echo \
92 124 "deb [arch=${arch} signed-by=${DOCKER_GPG_KEY_PATH}] https://download.docker.com/linux/debian \
93 125 ${codename} stable" | sudo tee "${DOCKER_APT_SOURCE_PATH}" > /dev/null
94 -
95 - log_info "Docker APT repository setup complete."
126 + log_success "Docker APT repository added."
96 127 }
97 128
98 129 # Step 3: Install Docker Engine packages.
99 130 install_docker() {
131 + local docker_pkgs=("docker-ce" "docker-ce-cli" "containerd.io" "docker-buildx-plugin" "docker-compose-plugin")
100 132 log_info "Updating package list after adding Docker repository..."
101 - sudo apt-get update
102 -
103 - log_info "Installing Docker packages..."
104 - sudo apt-get install -y \
105 - docker-ce \
106 - docker-ce-cli \
107 - containerd.io \
108 - docker-buildx-plugin \
109 - docker-compose-plugin
110 - log_info "Docker packages installed."
133 + # Run update quietly (-qq)
134 + if ! sudo apt-get update -qq; then
135 + log_warning "Second 'apt-get update' failed. This might be okay if sources are correct, continuing installation..."
136 + # Don't exit here, as sometimes transient network issues cause this but install might still work if cache is okay.
137 + fi
138 +
139 + log_info "Installing Docker packages: ${docker_pkgs[*]}..."
140 + # Run install quietly (-qq) and assume yes (-y)
141 + if ! sudo apt-get install -y -qq "${docker_pkgs[@]}"; then
142 + log_error "Failed to install Docker packages: ${docker_pkgs[*]}."
143 + fi
144 + log_success "Docker packages installed."
111 145 }
112 146
113 147 # Step 4: Perform post-installation steps (add user to docker group).
114 148 post_install() {
115 149 log_info "Adding current user (${USER}) to the 'docker' group..."
116 150 if getent group docker > /dev/null; then
117 - sudo usermod -aG docker "$USER"
118 - log_info "User '${USER}' added to the 'docker' group."
119 - log_info "IMPORTANT: You need to log out and log back in for the group change to take effect."
120 - log_info "Alternatively, you can run 'newgrp docker' in your current shell, but logging out is recommended."
151 + # Use GID instead of name for group check in usermod, slightly more robust
152 + local docker_gid
153 + docker_gid=$(getent group docker | cut -d: -f3)
154 + if ! groups "$USER" | grep -qw "$docker_gid" && ! groups "$USER" | grep -qw "docker"; then
155 + if sudo usermod -aG docker "$USER"; then
156 + log_success "User '${USER}' added to the 'docker' group."
157 + log_warning "${COLOR_BOLD}IMPORTANT:${COLOR_RESET}${COLOR_YELLOW} You must log out and log back in for this change to take effect!${COLOR_RESET}"
158 + log_info "Alternatively, run 'newgrp docker' in your current shell (may require password)."
159 + else
160 + log_error "Failed to add user '${USER}' to the 'docker' group."
161 + fi
162 + else
163 + log_info "User '${USER}' is already in the 'docker' group."
164 + fi
121 165 else
122 - log_info "The 'docker' group does not exist. Skipping user addition."
123 - log_info "This might happen if Docker installation failed earlier."
166 + log_warning "The 'docker' group does not seem to exist. Skipping adding user."
167 + log_warning "This might indicate an issue during Docker package installation."
124 168 fi
125 169 }
126 170
127 171 # --- Main Execution ---
128 172
129 173 main() {
130 - log_info "Starting Docker installation script..."
174 + log_info "${COLOR_BOLD}Starting Docker installation script...${COLOR_RESET}"
131 175
132 176 # Basic checks
133 177 if ! command_exists sudo; then
134 178 log_error "'sudo' command not found. This script requires sudo privileges."
135 179 fi
136 - if [[ $EUID -eq 0 ]]; then
137 - log_info "Script is running as root. Using sudo is recommended for specific commands only."
138 - # Consider adapting script if root execution should behave differently,
139 - # but for now, relying on internal sudo calls is fine.
140 - fi
141 - if ! command_exists dpkg; then
142 - log_error "'dpkg' command not found. This script is intended for Debian-based systems."
180 + # Allow running as root, but it's less common for interactive use.
181 + # if [[ $EUID -eq 0 ]]; then
182 + # log_warning "Running as root. It's generally recommended to run as a user with sudo privileges."
183 + # fi
184 + if ! command_exists dpkg || ! command_exists apt-get; then
185 + log_error "'dpkg' or 'apt-get' not found. This script requires a Debian-based system."
143 186 fi
144 187 if ! [[ -f /etc/os-release ]]; then
145 - log_error "File /etc/os-release not found. This script is intended for Debian-based systems."
188 + log_error "File /etc/os-release not found. Cannot determine OS version. Aborting."
146 189 fi
147 190
148 191 # Execute steps
@@ -151,12 +194,16 @@ main() {
151 194 install_docker
152 195 post_install
153 196
154 - log_info "-----------------------------------------------------"
155 - log_info "Docker installation completed successfully! 🎉"
156 - log_info "REMEMBER TO LOG OUT AND LOG BACK IN to use Docker without sudo."
157 - log_info "Verify installation by running: docker run hello-world"
158 - log_info "-----------------------------------------------------"
197 + echo # Add a newline for spacing
198 + log_success "-----------------------------------------------------"
199 + log_success "${COLOR_BOLD}Docker installation completed successfully! 🎉${COLOR_RESET}"
200 + log_warning "${COLOR_BOLD}REMEMBER TO LOG OUT AND LOG BACK IN${COLOR_RESET}${COLOR_YELLOW} to use Docker without 'sudo'.${COLOR_RESET}"
201 + log_info "After logging back in, verify installation by running: ${COLOR_BOLD}docker run hello-world${COLOR_RESET}"
202 + log_success "-----------------------------------------------------"
159 203 }
160 204
161 - # Run the main function
162 - main
205 + # Run the main function if the script is executed directly
206 + # This check prevents execution if the script is sourced, though unlikely for this use case.
207 + if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
208 + main
209 + fi

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1 file changed, 2 insertions, 2 deletions

docker.sh

@@ -3,8 +3,8 @@
3 3 # Installs Docker Engine on Debian-based Linux distributions.
4 4 #
5 5 # Usage:
6 - # ./install_docker.sh
7 - # curl -fsSL <URL_TO_THIS_SCRIPT> | bash
6 + # ./docker.sh
7 + # curl -fsSL https://cdn.albert.lol/docker.sh | bash
8 8 #
9 9 # Requires:
10 10 # - Running on a Debian-based system (Debian, Ubuntu, etc.)

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1 file changed, 149 insertions, 27 deletions

docker.sh

@@ -1,40 +1,162 @@
1 1 #!/bin/bash
2 + #
3 + # Installs Docker Engine on Debian-based Linux distributions.
4 + #
5 + # Usage:
6 + # ./install_docker.sh
7 + # curl -fsSL <URL_TO_THIS_SCRIPT> | bash
8 + #
9 + # Requires:
10 + # - Running on a Debian-based system (Debian, Ubuntu, etc.)
11 + # - User executing the script must have sudo privileges.
12 + # - Internet connection.
2 13
3 - # Exit immediately if a command exits with a non-zero status
4 - set -e
14 + # Strict mode
15 + set -euo pipefail
5 16
6 - # Update package index
7 - sudo apt-get update
17 + # --- Configuration ---
18 + readonly DOCKER_GPG_KEY_PATH="/etc/apt/keyrings/docker.asc"
19 + readonly DOCKER_APT_SOURCE_PATH="/etc/apt/sources.list.d/docker.list"
8 20
9 - # Install required packages for Docker installation
10 - sudo apt-get install -y ca-certificates curl
21 + # --- Helper Functions ---
11 22
12 - # Create the directory for Docker's apt keyrings
13 - sudo install -m 0755 -d /etc/apt/keyrings
23 + # Logs an informational message.
24 + # Arguments:
25 + # $*: Message to log.
26 + log_info() {
27 + echo "[INFO] $*"
28 + }
14 29
15 - # Download and add Docker's GPG key
16 - sudo curl -fsSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc
30 + # Logs an error message and exits.
31 + # Arguments:
32 + # $*: Message to log.
33 + log_error() {
34 + echo >&2 "[ERROR] $*"
35 + exit 1
36 + }
17 37
18 - # Set appropriate permissions for the GPG key
19 - sudo chmod a+r /etc/apt/keyrings/docker.asc
38 + # Checks if a command exists.
39 + # Arguments:
40 + # $1: Command name.
41 + command_exists() {
42 + command -v "$1" >/dev/null 2>&1
43 + }
20 44
21 - # Add Docker's official apt repository
22 - echo \
23 - "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/debian \
24 - $(. /etc/os-release && echo \"$VERSION_CODENAME\") stable" | \
25 - sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
45 + # --- Main Functions ---
26 46
27 - # Update package index again to include Docker's repository
28 - sudo apt-get update
47 + # Step 1: Update package lists and install prerequisite packages.
48 + install_prerequisites() {
49 + log_info "Updating package list and installing prerequisites..."
50 + sudo apt-get update
51 + sudo apt-get install -y \
52 + ca-certificates \
53 + curl \
54 + gnupg
55 + log_info "Prerequisites installed."
56 + }
29 57
30 - # Install Docker packages
31 - sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
58 + # Step 2: Set up Docker's official APT repository.
59 + setup_apt_repository() {
60 + log_info "Setting up Docker's APT repository..."
32 61
33 - # Add the current user to the Docker group
34 - sudo usermod -aG docker $USER
62 + # Create the directory for the GPG key if it doesn't exist
63 + log_info "Creating keyring directory: /etc/apt/keyrings"
64 + sudo install -m 0755 -d "$(dirname "${DOCKER_GPG_KEY_PATH}")"
35 65
36 - # Refresh group membership without needing to log out and back in
37 - newgrp docker
66 + # Download Docker's official GPG key
67 + log_info "Downloading Docker GPG key to ${DOCKER_GPG_KEY_PATH}"
68 + # Use curl with fail-fast, silent, show-error, location-follow flags
69 + sudo curl -fsSL "https://download.docker.com/linux/debian/gpg" -o "${DOCKER_GPG_KEY_PATH}"
70 + # Ensure the key is readable by apt
71 + sudo chmod a+r "${DOCKER_GPG_KEY_PATH}"
38 72
39 - # Print success message
40 - echo "Docker has been installed successfully."
73 + # Detect architecture and OS codename
74 + local arch
75 + arch="$(dpkg --print-architecture)"
76 + local codename
77 + # Source os-release safely
78 + if [[ -f /etc/os-release ]]; then
79 + # shellcheck source=/dev/null
80 + codename="$(. /etc/os-release && echo "$VERSION_CODENAME")"
81 + else
82 + log_error "Cannot determine OS codename. /etc/os-release not found."
83 + fi
84 +
85 + if [[ -z "$codename" ]]; then
86 + log_error "Could not determine VERSION_CODENAME from /etc/os-release."
87 + fi
88 +
89 + # Add the Docker repository to Apt sources
90 + log_info "Adding Docker repository source to ${DOCKER_APT_SOURCE_PATH}"
91 + echo \
92 + "deb [arch=${arch} signed-by=${DOCKER_GPG_KEY_PATH}] https://download.docker.com/linux/debian \
93 + ${codename} stable" | sudo tee "${DOCKER_APT_SOURCE_PATH}" > /dev/null
94 +
95 + log_info "Docker APT repository setup complete."
96 + }
97 +
98 + # Step 3: Install Docker Engine packages.
99 + install_docker() {
100 + log_info "Updating package list after adding Docker repository..."
101 + sudo apt-get update
102 +
103 + log_info "Installing Docker packages..."
104 + sudo apt-get install -y \
105 + docker-ce \
106 + docker-ce-cli \
107 + containerd.io \
108 + docker-buildx-plugin \
109 + docker-compose-plugin
110 + log_info "Docker packages installed."
111 + }
112 +
113 + # Step 4: Perform post-installation steps (add user to docker group).
114 + post_install() {
115 + log_info "Adding current user (${USER}) to the 'docker' group..."
116 + if getent group docker > /dev/null; then
117 + sudo usermod -aG docker "$USER"
118 + log_info "User '${USER}' added to the 'docker' group."
119 + log_info "IMPORTANT: You need to log out and log back in for the group change to take effect."
120 + log_info "Alternatively, you can run 'newgrp docker' in your current shell, but logging out is recommended."
121 + else
122 + log_info "The 'docker' group does not exist. Skipping user addition."
123 + log_info "This might happen if Docker installation failed earlier."
124 + fi
125 + }
126 +
127 + # --- Main Execution ---
128 +
129 + main() {
130 + log_info "Starting Docker installation script..."
131 +
132 + # Basic checks
133 + if ! command_exists sudo; then
134 + log_error "'sudo' command not found. This script requires sudo privileges."
135 + fi
136 + if [[ $EUID -eq 0 ]]; then
137 + log_info "Script is running as root. Using sudo is recommended for specific commands only."
138 + # Consider adapting script if root execution should behave differently,
139 + # but for now, relying on internal sudo calls is fine.
140 + fi
141 + if ! command_exists dpkg; then
142 + log_error "'dpkg' command not found. This script is intended for Debian-based systems."
143 + fi
144 + if ! [[ -f /etc/os-release ]]; then
145 + log_error "File /etc/os-release not found. This script is intended for Debian-based systems."
146 + fi
147 +
148 + # Execute steps
149 + install_prerequisites
150 + setup_apt_repository
151 + install_docker
152 + post_install
153 +
154 + log_info "-----------------------------------------------------"
155 + log_info "Docker installation completed successfully! 🎉"
156 + log_info "REMEMBER TO LOG OUT AND LOG BACK IN to use Docker without sudo."
157 + log_info "Verify installation by running: docker run hello-world"
158 + log_info "-----------------------------------------------------"
159 + }
160 +
161 + # Run the main function
162 + main

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1 file changed, 1 insertion, 1 deletion

docker.sh

@@ -37,4 +37,4 @@ sudo usermod -aG docker $USER
37 37 newgrp docker
38 38
39 39 # Print success message
40 - echo "Docker has been installed successfully.
40 + echo "Docker has been installed successfully."

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1 file changed, 1 insertion, 1 deletion

docker.sh

@@ -37,4 +37,4 @@ sudo usermod -aG docker $USER
37 37 newgrp docker
38 38
39 39 # Print success message
40 - echo "Docker has been installed successfully."
40 + echo "Docker has been installed successfully.

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