Corrections to pass pre-commit hooks

Dockerfile

@@ -11,7 +11,15 @@ FROM ubuntu:20.04 AS jbig2enc
 
 WORKDIR /usr/src/jbig2enc
 
-RUN apt-get update && apt-get install -y --no-install-recommends build-essential automake libtool libleptonica-dev zlib1g-dev git ca-certificates
+RUN apt-get update \
+  && apt-get install -y --no-install-recommends build-essential \
+    automake \
+	libtool \
+	libleptonica-dev \
+	zlib1g-dev \
+	git \
+	ca-certificates \
+&& rm -rf /var/lib/apt/lists/*
 
 RUN git clone https://github.com/agl/jbig2enc .
 RUN ./autogen.sh

docker/docker-entrypoint.sh

@@ -56,12 +56,12 @@ install_languages() {
 		#    continue
 		#fi
 
-		if dpkg -s $pkg &>/dev/null; then
+		if dpkg -s "$pkg" &>/dev/null; then
 			echo "Package $pkg already installed!"
 			continue
 		fi
 
-		if ! apt-cache show $pkg &>/dev/null; then
+		if ! apt-cache show "$pkg" &>/dev/null; then
 			echo "Package $pkg not found! :("
 			continue
 		fi
@@ -77,7 +77,7 @@ install_languages() {
 echo "Paperless-ngx docker container starting..."
 
 # Install additional languages if specified
-if [[ ! -z "$PAPERLESS_OCR_LANGUAGES" ]]; then
+if [[ -n "$PAPERLESS_OCR_LANGUAGES" ]]; then
 	install_languages "$PAPERLESS_OCR_LANGUAGES"
 fi
 

docker/docker-prepare.sh

@@ -6,14 +6,11 @@ wait_for_postgres() {
 
 	echo "Waiting for PostgreSQL to start..."
 
-	host="${PAPERLESS_DBHOST}"
-	port="${PAPERLESS_DBPORT}"
+	host="${PAPERLESS_DBHOST:=localhost}"
+	port="${PAPERLESS_DBPORT:=5342}"
 
-	if [[ -z $port ]]; then
-		port="5432"
-	fi
 
-	while ! </dev/tcp/$host/$port; do
+	while [ ! "$(pg_isready -h "$host" -p "$port")" ]; do
 
 		if [ $attempt_num -eq $max_attempts ]; then
 			echo "Unable to connect to database."
@@ -23,7 +20,7 @@ wait_for_postgres() {
 
 		fi
 
-		attempt_num=$(expr "$attempt_num" + 1)
+		attempt_num=$(("$attempt_num" + 1))
 		sleep 5
 	done
 }

docker/install_management_commands.sh

@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 for command in document_archiver document_exporter document_importer mail_fetcher document_create_classifier document_index document_renamer document_retagger document_thumbnails document_sanity_checker manage_superuser;
 do
 	echo "installing $command..."

docs/Dockerfile

@@ -1,5 +1,4 @@
 FROM python:3.5.1
-MAINTAINER Pit Kleyersburg <pitkley@googlemail.com>
 
 # Install Sphinx and Pygments
 RUN pip install Sphinx Pygments

docs/screenshots.rst

@@ -42,4 +42,3 @@ Mobile support in the future? This kinda works, however some layouts are still
 too wide.
 
 .. image:: _static/screenshots/mobile.png
-

install-paperless-ngx.sh

@@ -3,16 +3,16 @@
 ask() {
 	while true ; do
 		if [[ -z $3 ]] ; then
-			read -p "$1 [$2]: " result
+			read -r -p "$1 [$2]: " result
 		else
-			read -p "$1 ($3) [$2]: " result
+			read -r -p "$1 ($3) [$2]: " result
 		fi
 		if [[ -z $result ]]; then
 			ask_result=$2
 			return
 		fi
 		array=$3
-		if [[ -z $3 || " ${array[@]} " =~ " ${result} " ]]; then
+		if [[ -z $3 || " ${array[*]} " =~ ${result} ]]; then
 			ask_result=$result
 			return
 		else
@@ -24,7 +24,7 @@ ask() {
 ask_docker_folder() {
 	while true ; do
 
-		read -p "$1 [$2]: " result
+		read -r -p "$1 [$2]: " result
 
 		if [[ -z $result ]]; then
 			ask_result=$2
@@ -64,8 +64,7 @@ fi
 
 # Check if user has permissions to run Docker by trying to get the status of Docker (docker status).
 # If this fails, the user probably does not have permissions for Docker.
-docker stats --no-stream 2>/dev/null 1>&2
-if [ $? -ne 0 ] ; then
+if [ ! "$(docker stats --no-stream 2>/dev/null 1>&2)" ] ; then
 	echo ""
 	echo "WARN: It look like the current user does not have Docker permissions."
 	echo "WARN: Use 'sudo usermod -aG docker $USER' to assign Docker permissions to the user."
@@ -228,7 +227,7 @@ ask "Paperless username" "$(whoami)"
 USERNAME=$ask_result
 
 while true; do
-	read -sp "Paperless password: " PASSWORD
+	read -r -sp "Paperless password: " PASSWORD
 	echo ""
 
 	if [[ -z $PASSWORD ]] ; then
@@ -236,7 +235,7 @@ while true; do
 		continue
 	fi
 
-	read -sp "Paperless password (again): " PASSWORD_REPEAT
+	read -r -sp "Paperless password (again): " PASSWORD_REPEAT
 	echo ""
 
 	if [[ ! "$PASSWORD" == "$PASSWORD_REPEAT" ]] ; then
@@ -285,7 +284,7 @@ echo "Paperless username: $USERNAME"
 echo "Paperless email: $EMAIL"
 
 echo ""
-read -p "Press any key to install."
+read -r -p "Press any key to install."
 
 echo ""
 echo "Installing paperless..."
@@ -304,7 +303,7 @@ fi
 wget "https://raw.githubusercontent.com/paperless-ngx/paperless-ngx/main/docker/compose/docker-compose.$DOCKER_COMPOSE_VERSION.yml" -O docker-compose.yml
 wget "https://raw.githubusercontent.com/paperless-ngx/paperless-ngx/main/docker/compose/.env" -O .env
 
-SECRET_KEY=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 64 | head -n 1)
+SECRET_KEY=$(tr -dc 'a-zA-Z0-9' < /dev/urandom | fold -w 64 | head -n 1)
 
 DEFAULT_LANGUAGES="deu eng fra ita spa"
 
@@ -318,7 +317,7 @@ DEFAULT_LANGUAGES="deu eng fra ita spa"
 	echo "PAPERLESS_TIME_ZONE=$TIME_ZONE"
 	echo "PAPERLESS_OCR_LANGUAGE=$OCR_LANGUAGE"
 	echo "PAPERLESS_SECRET_KEY=$SECRET_KEY"
-	if [[ ! " ${DEFAULT_LANGUAGES[@]} " =~ " ${OCR_LANGUAGE} " ]] ; then
+	if [[ ! " ${DEFAULT_LANGUAGES[*]} " =~ ${OCR_LANGUAGE} ]] ; then
 		echo "PAPERLESS_OCR_LANGUAGES=$OCR_LANGUAGE"
 	fi
 } > docker-compose.env

scripts/start_services.sh

@@ -1,3 +1,5 @@
+#!/usr/bin/env bash
+
 docker run -p 5432:5432 -e POSTGRES_PASSWORD=password -v paperless_pgdata:/var/lib/postgresql/data -d postgres:13
 docker run -d -p 6379:6379 redis:latest
 docker run -p 3000:3000 -d gotenberg/gotenberg:7