docker installation + aliases

#!/bin/bash
set -e

# Helper: wait until no other apt/dpkg process holds the lock
wait_for_apt() {
  local LOCK="/var/lib/dpkg/lock-frontend"
  echo -n "Waiting for any other apt process to finish..."
  while sudo fuser "$LOCK" >/dev/null 2>&1; do
    echo -n "."
    sleep 3
  done
  echo " done."
}

# 1) Update & upgrade
wait_for_apt
sudo apt-get update

wait_for_apt
sudo apt-get upgrade -y

# 2) Install prerequisites
wait_for_apt
sudo apt-get install -y ca-certificates curl gnupg lsb-release

# 3) Add Docker’s GPG key & repo
sudo install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/debian/gpg \
  | sudo tee /etc/apt/keyrings/docker.asc > /dev/null
sudo chmod a+r /etc/apt/keyrings/docker.asc

echo \
  "deb [arch=$(dpkg --print-architecture) \
    signed-by=/etc/apt/keyrings/docker.asc] \
    https://download.docker.com/linux/debian \
    $(. /etc/os-release && echo "$VERSION_CODENAME") stable" \
  | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

# 4) Update again for Docker packages
wait_for_apt
sudo apt-get update

# 5) Install Docker Engine
wait_for_apt
sudo apt-get install -y \
  docker-ce docker-ce-cli containerd.io \
  docker-buildx-plugin docker-compose-plugin

# 6) Ensure 'docker' group exists, add user
sudo groupadd docker 2>/dev/null || true
sudo usermod -aG docker "$USER"

# 7) Append Docker aliases & functions to ~/.bashrc
cat <<'EOF' >> ~/.bashrc

# --- Docker Aliases & Functions ---
alias da="docker attach"
alias dl="docker ps -l -q"

alias diprune="docker image prune"
alias dcprune="docker container prune"
alias dvprune="docker volume prune"

alias dps="docker ps"
alias dpa="docker ps -a"
alias dim="docker images"

dinspectip() { docker inspect --format '{{ .NetworkSettings.IPAddress }}' "$1"; }

alias dkd="docker run -d -P --name"
drun() { docker run -d -it "$1"; }

alias dd='dcuf && dpa'
alias ddd='dcufd && dpa'

alias dlr='docker logs -f'
alias dkdi="docker run -it -d -P --name"
alias dex="docker exec -i -t"

dbash() { docker exec -it "$(docker ps -aqf "name=$1")" bash; }

alias dcs="docker compose stop"

alias drmf='docker stop $(docker ps -a -q) && docker rm $(docker ps -a -q)'
alias drmfi='docker stop $(docker ps -a -q) && docker rm $(docker ps -a -q) && dri'

dstop()  { docker stop $(docker ps -a -q); }
dstart() { docker start $(docker ps -a -q); }
drm()    { docker rm $(docker ps -a -q); }
dri()    { docker rmi -f $(docker images -q); }

dsr() { docker stop "$1" && docker rm "$1"; }
dir() { docker image rm "$1"; }

dcus() { docker compose up -d --scale "$1=$2"; }

dbu()  { DOCKER_BUILDKIT=1 docker build --compress -t="$1" .; }
dbuf() { DOCKER_BUILDKIT=1 docker build --compress -t="$1" -f="$2" .; }
dbuc() { docker build --compress --no-cache -t="$1" .; }

alias dcb="docker compose build"
alias dcu="docker compose up -d"
alias dcd="docker compose down"
alias dcuf="docker compose up -d --force-recreate"
alias dcbuf="docker compose build && docker compose up -d --force-recreate"
alias dcbufnc="docker-compose build --no-cache && docker-compose up -d --force-recreate"
alias dcbufncs="dri && drm && docker-compose build --no-cache && docker-compose up -d --force-recreate --scale api=3"

alias dcbd="docker-compose -f docker-compose.dev.yml build"
alias dcud="docker compose -f docker-compose.dev.yml up -d"
alias dcdd="docker compose -f docker-compose.dev.yml down"
alias dcufd="docker compose -f docker-compose.dev.yml up -d --force-recreate"
alias dcbufd="docker compose -f docker-compose.dev.yml build && docker compose -f docker-compose.dev.yml up -d --force-recreate"
alias dcbufdnc="docker-compose -f docker-compose.dev.yml build --no-cache && docker-compose -f docker-compose.dev.yml up -d --force-recreate"
EOF

echo
echo "✅ Docker installed. Aliases appended to ~/.bashrc."
echo "ℹ️  Log out and back in (or reboot) to apply your new 'docker' group membership."