initial pass at including docker-options plugin. closes #1062

docs/docker-options.md

@@ -0,0 +1,60 @@
+docker-options
+========================
+
+Usage
+-----
+
+```bash
+$ dokku help
+...
+    docker-options <app>                               Display apps docker options for all phases
+    docker-options <app> <phase(s)>                    Display apps docker options for phase (comma seperated phase list)
+    docker-options:add <app> <phase(s)> OPTION         Add docker option to app for phase (comma seperated phase list)
+    docker-options:remove <app> <phase(s)> OPTION      Remove docker option from app for phase (comma seperated phase list)
+...
+````
+
+Add some options
+
+```bash
+$ dokku docker-options:add myapp deploy "-v /host/path:/container/path"
+$ dokku docker-options:add myapp run "-v /another/container/path"
+$ dokku docker-options:add myapp "-link container_name:alias"
+```
+
+Check what we added
+
+```bash
+$ dokku docker-options myapp
+-link container_name:alias
+-v /host/path:/container/path
+-v /another/container/path
+```
+
+Remove an option
+```bash
+$ dokku docker-options:remove myapp "-link container_name:alias"
+```
+
+Manual Usage
+------------
+
+In your applications folder (/home/dokku/app_name) create a file called DOCKER_OPTIONS.
+
+Inside this file list one docker option per line. For example:
+
+```bash
+-link container_name:alias
+-v /host/path:/container/path
+-v /another/container/path
+```
+
+The above example will result in the following options being passed to docker during deploy and docker run:
+
+```bash
+-link container_name:alias -v /host/path:/container/path -v /another/container/path
+```
+
+You may also include comments (lines beginning with a #) and blank lines in the DOCKER_OPTIONS file.
+
+Move information on docker options can be found here: http://docs.docker.io/en/latest/reference/run/ .

docs/index.md

@@ -17,6 +17,7 @@ Docker powered mini-Heroku. The smallest PaaS implementation you've ever seen.
 - [DNS Configuration](http://progrium.viewdocs.io/dokku/dns)
 - [Nginx Configuration](http://progrium.viewdocs.io/dokku/nginx)
 - [Running Remote commands](http://progrium.viewdocs.io/dokku/remote-commands)
+- [Container Options](http://progrium.viewdocs.io/dokku/docker-options)
 
 ### Community Contributions
 

plugins/docker-options/commands

@@ -0,0 +1,149 @@
+#!/usr/bin/env bash
+set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+source "$(dirname $0)/../common/functions"
+
+PHASES=(build deploy run)
+
+FILE_PREFIX="DOCKER_OPTIONS_"
+
+get_app() {
+  [[ -z $1 ]] && dokku_log_fail "Please specify an app to run the command on"
+  verify_app_name "$1"
+  APP="$1"
+}
+
+get_phases() {
+  local passed_phases_list=$1
+  local phase
+  if [[ -n $passed_phases_list ]]; then
+    IFS=',' read -ra passed_phases <<< "$passed_phases_list"
+    for phase in "${passed_phases[@]}"; do
+      verify_phase $phase
+    done
+  fi
+}
+
+verify_phase() {
+  local phase
+  for phase in "${PHASES[@]}"; do
+    if [[ "$phase" = "$1" ]]; then
+      return 0
+    fi
+  done
+  dokku_log_fail "Phase(s) must be one of [${PHASES[@]}]"
+}
+
+get_phase_file_path() {
+  local phase=$1
+  phase_file_path="${DOKKU_ROOT}/${APP}/${FILE_PREFIX}${phase^^}"
+}
+
+create_phase_file_if_required() {
+  local phase_file_path=$1
+  [[ -f $phase_file_path ]] || {
+    touch $phase_file_path
+  }
+}
+
+display_phase_options() {
+  local phase=$1
+  local phase_file_path=$2
+  echo "${phase^} options:"
+  sed -e 's/^/    /' $phase_file_path
+}
+
+display_all_phases_options() {
+  for phase in "${PHASES[@]}"; do
+    get_phase_file_path $phase
+    if [[ -s $phase_file_path ]] ; then
+       display_phase_options $phase $phase_file_path
+    fi
+  done
+}
+
+display_passed_phases_options() {
+  local passed_phases=("${!1}")
+  local phase
+  for phase in "${passed_phases[@]}"; do
+    get_phase_file_path $phase
+    if [ ! -s $phase_file_path ] ; then
+      echo "${phase^} options: none"
+    else
+      display_phase_options $phase $phase_file_path
+    fi
+  done
+}
+
+get_passed_docker_option() {
+  [[ -z "$@" ]] && dokku_log_fail "Please specify docker options to add to the phase"
+  passed_docker_option=("$@")
+}
+
+add_passed_docker_option() {
+  local passed_phases=("${!1}")
+  local passed_option_string=$2
+  local phase
+  for phase in "${passed_phases[@]}"; do
+    get_phase_file_path $phase
+    create_phase_file_if_required $phase_file_path
+    echo "${passed_option_string}" >> $phase_file_path
+    all_phase_options=$(< $phase_file_path)
+    echo -e "${all_phase_options}" | sed '/^$/d' | sort -u > $phase_file_path
+  done
+}
+
+remove_passed_docker_option() {
+  local passed_phases=("${!1}")
+  local passed_option_string=$2
+  local phase
+  for phase in "${passed_phases[@]}"; do
+    get_phase_file_path $phase
+    [[ ! -s $phase_file_path ]] || {
+      all_phase_options=$(< $phase_file_path)
+      all_phase_options=$(echo -e "${all_phase_options}" | sed "s#^${passed_option_string}\$##")
+      echo -e "${all_phase_options}" | sed '/^$/d' | sort -u > $phase_file_path
+    }
+  done
+}
+
+case "$1" in
+  # Display applications docker options
+  docker-options)
+    get_app $2
+    get_phases $3
+    if [[ ! "${passed_phases[@]}" ]]; then
+      display_all_phases_options
+    else
+      display_passed_phases_options passed_phases[@]
+    fi
+  ;;
+
+  # Add a docker option to application
+  docker-options:add)
+    get_app $2
+    get_phases $3
+    shift 3 # everything else passed is the docker option
+    get_passed_docker_option "$@"
+    add_passed_docker_option passed_phases[@] "${passed_docker_option[@]}"
+  ;;
+
+  # Remove a docker option from application
+  docker-options:remove)
+    get_app $2
+    get_phases $3
+    shift 3 # everything else passed is the docker option
+    get_passed_docker_option "$@"
+    remove_passed_docker_option passed_phases[@] "${passed_docker_option[@]}"
+  ;;
+
+  # Display usage help
+  help)
+    cat && cat<<EOF
+    docker-options <app>                            Display apps docker options for all phases
+    docker-options <app> <phase(s)>                 Display apps docker options for phase (comma seperated phase list)
+    docker-options:add <app> <phase(s)> OPTION      Add docker option to app for phase (comma seperated phase list)
+    docker-options:remove <app> <phase(s)> OPTION   Remove docker option from app for phase (comma seperated phase list)
+EOF
+  ;;
+
+esac

plugins/docker-options/docker-args-build

@@ -0,0 +1 @@
+docker-args-deploy

plugins/docker-options/docker-args-deploy

@@ -0,0 +1,43 @@
+#!/usr/bin/env bash
+set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+
+STDIN=$(cat)
+APP="$1"
+
+case "$0" in
+  *docker-args-build)
+    PHASE=BUILD
+    ;;
+  *docker-args-deploy)
+    PHASE=DEPLOY
+    ;;
+  *docker-args-run)
+    PHASE=RUN
+    ;;
+esac
+
+FILE_PREFIX="DOCKER_OPTIONS_"
+PHASE_FILE_PATH="${DOKKU_ROOT}/${APP}/${FILE_PREFIX}${PHASE}"
+
+output=""
+
+if [[ -f "$PHASE_FILE_PATH" ]]; then
+  DONE=false
+  until $DONE; do
+    read line || DONE=true
+
+    [[ ! -n "$line" ]] && continue
+
+    # shellcheck disable=SC1001
+    case "$line" in
+      \#*)
+        continue
+        ;;
+      *)
+        output="$output $line"
+        ;;
+    esac
+  done < $PHASE_FILE_PATH
+fi
+
+echo "$STDIN$output"

plugins/docker-options/docker-args-run

@@ -0,0 +1 @@
+docker-args-deploy