Remove bash dependency

Depending on bash wasn't strictly necessary, as the two minimal scripts
in the repo were both nearly POSIX anyways.

Aside from simplifying the repo's dependencies a little bit, this also
helps reduce the overall Docker image size as an added bonus.

Dockerfile

@@ -14,9 +14,11 @@ RUN pip install --prefix /install --no-warn-script-location --no-cache-dir -r re
 
 FROM python:3.8-alpine
 
-RUN apk add --update --no-cache tor curl bash openrc
+RUN apk add --update --no-cache tor curl openrc
 # libcurl4-openssl-dev
 
+RUN apk -U upgrade
+
 ARG DOCKER_USER=whoogle
 ARG DOCKER_USERID=927
 ARG config_dir=/config
@@ -69,19 +71,20 @@ COPY app/ app/
 COPY run .
 #COPY whoogle.env .
 
-# Allow writing symlinks to build dir
-RUN chown 102:102 app/static/build
-
 # Create user/group to run as
-RUN adduser -D -g $DOCKER_USERID -u $DOCKER_USERID $DOCKER_USER 
+RUN adduser -D -g $DOCKER_USERID -u $DOCKER_USERID $DOCKER_USER
+
 # Fix ownership / permissions
 RUN	chown -R ${DOCKER_USER}:${DOCKER_USER} /whoogle /var/lib/tor
 
+# Allow writing symlinks to build dir
+RUN chown $DOCKER_USERID:$DOCKER_USERID app/static/build
+
 USER $DOCKER_USER:$DOCKER_USER
 
 EXPOSE $EXPOSE_PORT
 
-HEALTHCHECK  --interval=30s --timeout=5s \
+HEALTHCHECK --interval=30s --timeout=5s \
   CMD curl -f http://localhost:${EXPOSE_PORT}/healthz || exit 1
 
 CMD misc/tor/start-tor.sh & ./run

misc/tor/start-tor.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 if [ "$(whoami)" != "root" ]; then
     tor -f /etc/tor/torrc

run

@@ -1,11 +1,11 @@
-#!/bin/bash
+#!/bin/sh
 # Usage:
 # ./run # Runs the full web app
 # ./run test # Runs the testing suite
 
-set -euo pipefail
+set -eu
 
-SCRIPT_DIR="$(builtin cd "$(dirname "${BASH_SOURCE[0]}")" && pwd -P)"
+SCRIPT_DIR="$(CDPATH= command cd -- "$(dirname -- "$0")" && pwd -P)"
 
 # Set directory to serve static content from
 SUBDIR="${1:-app}"
@@ -17,7 +17,7 @@ rm -f "$SCRIPT_DIR"/app/static/build/*.js
 rm -f "$SCRIPT_DIR"/app/static/build/*.css
 
 # Check for regular vs test run
-if [[ "$SUBDIR" == "test" ]]; then
+if [ "$SUBDIR" = "test" ]; then
     # Set up static files for testing
     rm -rf "$STATIC_FOLDER"
     ln -s "$SCRIPT_DIR/app/static" "$STATIC_FOLDER"