Corrections to pass pre-commit hooks

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..."

docker/management_script.sh

@@ -6,10 +6,10 @@ cd /usr/src/paperless/src/
 
 if [[ $(id -u) == 0 ]] ;
 then
-  gosu paperless python3 manage.py management_command "$@"
+	gosu paperless python3 manage.py management_command "$@"
 elif [[ $(id -un) == "paperless" ]] ;
 then
-  python3 manage.py management_command "$@"
+	python3 manage.py management_command "$@"
 else
-  echo "Unknown user."
+	echo "Unknown user."
 fi