container_recreate.sh

#!/bin/bash
if [ "$2" == "debug" ] ; then
	readonly DEBUG=true
else
	readonly DEBUG=fale
fi

debug() {
	if [ "$DEBUG" == "true" ] ; then
		echo "DEBUG: $1"
	fi
}

# Check if a container ID or name was provided
if [ -z "$1" ]; then
  echo "Usage: $0 <container_name_or_id>"
  exit 1
fi

# Get container details using docker inspect
container_id=$1
container_info=$(docker inspect "$container_id")

# Initialize an empty array for the docker command
docker_command=()

#echo" container name..."
# Extract the container name
container_name=$(echo "$container_info" | jq -r '.[0].Name // empty' | sed 's/\///')

debug "image name..."
# Extract the image name
image=$(echo "$container_info" | jq -r '.[0].Config.Image // empty')
if [ -z "$image" ]; then
  echo "Error: Image not found for container $container_id."
  exit 1
fi


# Extract host environment variables
host_env=$(printenv | awk -F= '{print $1}' | sort)

debug "env variables..."
# Extract container environment variables and filter out those present on the host - default to empty if no env vars
env_vars=$(echo "$container_info" | jq -r '.[0].Config.Env[] // [] ' | awk -F= '{print $1}' | sort)
filtered_env_vars=$(comm -23 <(echo "$env_vars") <(echo "$host_env"))

# Add base docker command to the array
docker_command+=("docker run -d \\")

# Add name only if it exists
if [ -n "$container_name" ]; then
  docker_command+=("--name $container_name")
fi

debug "environment variables (filtered)..."
# Format the remaining environment variables for docker run
for var in $filtered_env_vars; do
  value=$(echo "$container_info" | jq -r --arg var "$var" '.[0].Config.Env[]? | select(startswith($var))')
  if [ -n "$value" ]; then
    docker_command+=("-e \"$value\"")
  fi
done

debug "port mappings..."
# Extract port mappings and add each port to the array individually
ports=$(echo "$container_info" | jq -r '.[0].HostConfig.PortBindings // {} | to_entries[]? | "-p " + .value[0].HostPort + ":" + .key')
if [ -n "$ports" ]; then
  # Add each port as a separate entry
  while IFS= read -r port; do
    docker_command+=("$port")
  done <<< "$ports"
fi

debug "volumes..."
# Extract volumes and add each volume to the array individually
volumes=$(echo "$container_info" | jq -r '.[0].Mounts[] // [] | "-v " + .Source + ":" + .Destination')
if [ -n "$volumes" ]; then
  # Add each volume as a separate entry
  while IFS= read -r volume; do
    docker_command+=("$volume")
  done <<< "$volumes"
fi

debug "cmd..."
# Extract the command used inside the container
cmd=$(echo "$container_info" | jq -r '.[0].Config.Cmd // [] | join(" ")')

# Add the image and command
docker_command+=("-it $image $cmd")

# Output the final docker command with a backslash at the end of each line except the last
echo "${docker_command[0]}"
for ((i = 1; i < ${#docker_command[@]}; i++)); do
  if [ $i -lt $((${#docker_command[@]} - 1)) ]; then
    echo "    ${docker_command[$i]} \\"
  else
    echo "    ${docker_command[$i]}"
  fi
done