Use PG tools from docker image

Instead of installing dependencies on the host, directly use the binary
shipped with the postgres docker image. This will also prevent possible
problems when API changes for example.

commands

@@ -8,14 +8,6 @@ if [[ ! -d $PLUGIN_DATA_ROOT ]]; then
   dokku_log_fail "$PLUGIN_SERVICE: Please run: sudo dokku plugins-install"
 fi
 
-if ! command -v psql &>/dev/null; then
-  dokku_log_fail "$PLUGIN_SERVICE: Please run: sudo dokku plugins-install-dependencies"
-fi
-
-if ! command -v pg_dump &>/dev/null; then
-  dokku_log_fail "$PLUGIN_SERVICE: Please run: sudo dokku plugins-install-dependencies"
-fi
-
 case "$1" in
   $PLUGIN_COMMAND_PREFIX:alias)
     [[ -z $2 ]] && dokku_log_fail "Please specify a name for the service"
@@ -123,11 +115,11 @@ case "$1" in
     [[ -z $2 ]] && dokku_log_fail "Please specify a name for the service"
     verify_service_name "$2"
     SERVICE="$2"; SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"
-
+    SERVICE_NAME="$(get_service_name "$SERVICE")"
+    DATABASE_NAME="$(get_database_name $SERVICE)"
     PASSWORD=$(cat "$SERVICE_ROOT/PASSWORD")
-    IP=$(get_container_ip "$ID")
 
-    PGPASSWORD="$PASSWORD" pg_dump -h "$IP" -p 5432 -U postgres -c -O "$SERVICE"
+    docker exec "$SERVICE_NAME" env PGPASSWORD="$PASSWORD" pg_dump -Fc --no-acl --no-owner -h localhost -U postgres -w "$DATABASE_NAME"
     ;;
 
   $PLUGIN_COMMAND_PREFIX:import)
@@ -168,12 +160,10 @@ case "$1" in
     [[ -z $2 ]] && dokku_log_fail "Please specify a name for the service"
     verify_service_name "$2"
     SERVICE="$2"; SERVICE_ROOT="$PLUGIN_DATA_ROOT/$SERVICE"
-
-    ID=$(cat "$SERVICE_ROOT/ID")
-    IP=$(get_container_ip "$ID")
-    PASSWORD=$(cat "$SERVICE_ROOT/PASSWORD")
     DATABASE_NAME="$(get_database_name $SERVICE)"
-    PGPASSWORD="$PASSWORD" psql -h "$IP" -U postgres -d "$DATABASE_NAME"
+    SERVICE_NAME="$(get_service_name "$SERVICE")"
+
+    docker exec -it "$SERVICE_NAME" psql -h localhost -U postgres "$DATABASE_NAME"
     ;;
 
   $PLUGIN_COMMAND_PREFIX:info)

dependencies

@@ -1,15 +0,0 @@
-#!/usr/bin/env bash
-set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
-source "$(dirname "$0")/config"
-
-case "$DOKKU_DISTRO" in
-  ubuntu)
-    export DEBIAN_FRONTEND=noninteractive
-    apt-get update
-    apt-get install -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" --force-yes -qq -y postgresql-client
-    ;;
-
-  opensuse)
-    zypper -q in -y postgresql-client
-    ;;
-esac