diff --git a/base/rootfs/etc/cont-init.d/01-set-timezone b/base/rootfs/etc/cont-init.d/01-set-timezone
index 71e6dec481..c39c77d221 100644
--- a/base/rootfs/etc/cont-init.d/01-set-timezone
+++ b/base/rootfs/etc/cont-init.d/01-set-timezone
@@ -1,7 +1,7 @@
 #!/usr/bin/with-contenv bash
 
-if [[ ! -z "$TZ" ]]; then
-    if [[ -f /usr/share/zoneinfo/$TZ ]]; then
+if [[ -n "$TZ" ]]; then
+    if [[ -f "/usr/share/zoneinfo/$TZ" ]]; then
          ln -sf /usr/share/zoneinfo/$TZ /etc/localtime
          echo "$TZ" >  /etc/timezone
     else
diff --git a/env.example b/env.example
index 0e21606db5..b1d8e26121 100644
--- a/env.example
+++ b/env.example
@@ -102,7 +102,7 @@ TZ=UTC
 #JIGASI_SIP_URI=test@sip2sip.info
 
 # Password for the specified SIP account as a clear text
-#JIGASI_SIP_PASSWORD=passw0rd
+#JIGASI_SIP_PASSWORD=
 
 # SIP server (use the SIP account domain if in doubt)
 #JIGASI_SIP_SERVER=sip2sip.info
diff --git a/jibri/rootfs/etc/cont-init.d/10-config b/jibri/rootfs/etc/cont-init.d/10-config
index 52c75adf5c..55a65d0cb9 100644
--- a/jibri/rootfs/etc/cont-init.d/10-config
+++ b/jibri/rootfs/etc/cont-init.d/10-config
@@ -17,24 +17,12 @@ if [[ -z $JIBRI_RECORDER_PASSWORD || -z $JIBRI_XMPP_PASSWORD ]]; then
     exit 1
 fi
 
-OLD_JIBRI_RECORDER_PASSWORD=passw0rd
-if [[ "$JIBRI_RECORDER_PASSWORD" == "$OLD_JIBRI_RECORDER_PASSWORD" ]]; then
-    echo 'FATAL ERROR: Jibri recorder password must be changed, check the README'
-    exit 1
-fi
-
-OLD_JIBRI_XMPP_PASSWORD=passw0rd
-if [[ "$JIBRI_XMPP_PASSWORD" == "$OLD_JIBRI_XMPP_PASSWORD" ]]; then
-    echo 'FATAL ERROR: Jibri auth password must be changed, check the README'
-    exit 1
-fi
-
 # DISPLAY is necessary for start
 [ -z "${DISPLAY}" ] \
 && ( echo -e "\e[31mERROR: Please set DISPLAY variable.\e[39m"; kill 1; exit 1 )
 
 # script for finalizing must have executing bit.
-[ ! -z "${JIBRI_FINALIZE_RECORDING_SCRIPT_PATH}" ] \
+[ -n "${JIBRI_FINALIZE_RECORDING_SCRIPT_PATH}" ] \
 && [ -f "${JIBRI_FINALIZE_RECORDING_SCRIPT_PATH}" ] \
 && [ ! -x "${JIBRI_FINALIZE_RECORDING_SCRIPT_PATH}" ] \
 && chmod +x ${JIBRI_FINALIZE_RECORDING_SCRIPT_PATH}
diff --git a/jicofo/rootfs/etc/cont-init.d/10-config b/jicofo/rootfs/etc/cont-init.d/10-config
index daf8aec69a..c7b2c9a858 100644
--- a/jicofo/rootfs/etc/cont-init.d/10-config
+++ b/jicofo/rootfs/etc/cont-init.d/10-config
@@ -7,12 +7,6 @@ if [[ -z $JICOFO_AUTH_PASSWORD ]]; then
     exit 1
 fi
 
-OLD_JICOFO_AUTH_PASSWORD=passw0rd
-if [[ "$JICOFO_AUTH_PASSWORD" == "$OLD_JICOFO_AUTH_PASSWORD" ]]; then
-    echo 'FATAL ERROR: Jicofo auth password must be changed, check the README'
-    exit 1
-fi
-
 # maintain backward compatibility with older variable
 [ -z "${XMPP_HIDDEN_DOMAIN}" ] && export XMPP_HIDDEN_DOMAIN="$XMPP_RECORDER_DOMAIN"
 
diff --git a/jigasi/rootfs/etc/cont-init.d/10-config b/jigasi/rootfs/etc/cont-init.d/10-config
index d483c5849d..2325a1c42c 100644
--- a/jigasi/rootfs/etc/cont-init.d/10-config
+++ b/jigasi/rootfs/etc/cont-init.d/10-config
@@ -7,12 +7,6 @@ if [[ -z $JIGASI_XMPP_PASSWORD ]]; then
     exit 1
 fi
 
-OLD_JIGASI_XMPP_PASSWORD=passw0rd
-if [[ "$JIGASI_XMPP_PASSWORD" == "$OLD_JIGASI_XMPP_PASSWORD" ]]; then
-    echo 'FATAL ERROR: Jigasi auth password must be changed, check the README'
-    exit 1
-fi
-
 [ -z "$JIGASI_MODE" ] && JIGASI_MODE="sip"
 JIGASI_MODE="$(echo $JIGASI_MODE | tr '[:upper:]' '[:lower:]')"
 
@@ -97,10 +91,10 @@ elif [[ "$JIGASI_MODE" == "transcriber" ]]; then
     fi
 fi
 
-if [[ -f /config/custom-sip-communicator.properties ]]; then
+if [[ -f "/config/custom-sip-communicator.properties" ]]; then
     cat /config/custom-sip-communicator.properties >> /config/sip-communicator.properties
 fi
-if [[ -f /config/custom-logging.properties ]]; then
+if [[ -f "/config/custom-logging.properties" ]]; then
     cat /config/custom-logging.properties >> /config/logging.properties
 fi
 
diff --git a/jvb/rootfs/etc/cont-init.d/10-config b/jvb/rootfs/etc/cont-init.d/10-config
index 1a001fbe94..b8416f585c 100644
--- a/jvb/rootfs/etc/cont-init.d/10-config
+++ b/jvb/rootfs/etc/cont-init.d/10-config
@@ -6,12 +6,6 @@ if [[ -z $JVB_DISABLE_XMPP ]]; then
         exit 1
     fi
 
-    OLD_JVB_AUTH_PASSWORD=passw0rd
-    if [[ "$JVB_AUTH_PASSWORD" == "$OLD_JVB_AUTH_PASSWORD" ]]; then
-        echo 'FATAL ERROR: JVB auth password must be changed, check the README'
-        exit 1
-    fi
-
     [ -z "${XMPP_SERVER}" ] && export XMPP_SERVER=xmpp.meet.jitsi
 
     # On environments like Swarm the IP address used by the default gateway need not be
@@ -22,7 +16,7 @@ fi
 
 # Migration from DOCKER_HOST_ADDRESS to JVB_ADVERTISE_IPS
 if [[ -z "${JVB_ADVERTISE_IPS}" ]]; then
-    if [[ ! -z "${DOCKER_HOST_ADDRESS}" ]]; then
+    if [[ -n "${DOCKER_HOST_ADDRESS}" ]]; then
         echo "WARNING: DOCKER_HOST_ADDRESS is deprecated, migrate to JVB_ADVERTISE_IPS"
         export JVB_ADVERTISE_IPS=${DOCKER_HOST_ADDRESS}
     fi
@@ -33,7 +27,7 @@ export LOCAL_ADDRESS=$(ip route get 1 | grep -oP '(?<=src ).*' | awk '{ print $1
 
 export SENTRY_RELEASE="${SENTRY_RELEASE:-$(apt-cache policy jitsi-videobridge2 | sed -n '/Installed/p' | sed -e 's/[^:]*: //')}"
 
-if [[ -f /config/custom-sip-communicator.properties ]]; then
+if [[ -f "/config/custom-sip-communicator.properties" ]]; then
     cat /config/custom-sip-communicator.properties > /config/sip-communicator.properties
 fi
 
diff --git a/prosody/rootfs/etc/cont-init.d/10-config b/prosody/rootfs/etc/cont-init.d/10-config
index f0be0af7ce..f29424a02a 100644
--- a/prosody/rootfs/etc/cont-init.d/10-config
+++ b/prosody/rootfs/etc/cont-init.d/10-config
@@ -1,6 +1,6 @@
 #!/usr/bin/with-contenv bash
 
-if [[ ! -f /etc/saslauthd.conf ]] && [[ "$AUTH_TYPE" == "ldap" ]]; then
+if [[ ! -f "/etc/saslauthd.conf" ]] && [[ "$AUTH_TYPE" == "ldap" ]]; then
   tpl /defaults/saslauthd.conf > /etc/saslauthd.conf
   mkdir -pm777 /var/run/saslauthd
   adduser prosody sasl
@@ -88,56 +88,24 @@ if [[ -z $JVB_AUTH_PASSWORD ]]; then
     exit 1
 fi
 
-OLD_JVB_AUTH_PASSWORD=passw0rd
-if [[ "$JVB_AUTH_PASSWORD" == "$OLD_JVB_AUTH_PASSWORD" ]]; then
-    echo 'FATAL ERROR: JVB auth password must be changed, check the README'
-    exit 1
-fi
-
-if [[ ! -z $JIBRI_XMPP_PASSWORD ]]; then
-    OLD_JIBRI_XMPP_PASSWORD=passw0rd
-    if [[ "$JIBRI_XMPP_PASSWORD" == "$OLD_JIBRI_XMPP_PASSWORD" ]]; then
-        echo 'FATAL ERROR: Jibri auth password must be changed, check the README'
-        exit 1
-    fi
-fi
-
-if [[ "$PROSODY_MODE" == "client" ]]; then
-    if [[ ! -z $JIBRI_RECORDER_PASSWORD ]]; then
-        OLD_JIBRI_RECORDER_PASSWORD=passw0rd
-        if [[ "$JIBRI_RECORDER_PASSWORD" == "$OLD_JIBRI_RECORDER_PASSWORD" ]]; then
-            echo 'FATAL ERROR: Jibri recorder password must be changed, check the README'
-            exit 1
-        fi
-    fi
-fi
-
-if [[ ! -z $JIGASI_XMPP_PASSWORD ]]; then
-    OLD_JIGASI_XMPP_PASSWORD=passw0rd
-    if [[ "$JIGASI_XMPP_PASSWORD" == "$OLD_JIGASI_XMPP_PASSWORD" ]]; then
-        echo 'FATAL ERROR: Jigasi auth password must be changed, check the README'
-        exit 1
-    fi
-fi
-
 if [[ "$PROSODY_MODE" == "visitors" ]]; then
     [ -z "$VISITORS_XMPP_DOMAIN" ] && VISITORS_XMPP_DOMAIN="meet.jitsi"
     [ -z "$PROSODY_VISITOR_INDEX" ] && PROSODY_VISITOR_INDEX=0
     FULL_VISITORS_XMPP_DOMAIN="v$PROSODY_VISITOR_INDEX.$VISITORS_XMPP_DOMAIN"
-    if [[ ! -f /config/certs/$FULL_VISITORS_XMPP_DOMAIN.crt ]]; then
+    if [[ ! -f "/config/certs/$FULL_VISITORS_XMPP_DOMAIN.crt" ]]; then
         # echo for using all default values
         echo | prosodyctl --config $PROSODY_CFG cert generate $FULL_VISITORS_XMPP_DOMAIN
     fi
 elif [[ "$PROSODY_MODE" == "brewery" ]]; then
     echo "No need to generate certs for main XMPP domain in brewery mode"
 else
-    if [[ ! -f /config/certs/$XMPP_DOMAIN.crt ]]; then
+    if [[ ! -f "/config/certs/$XMPP_DOMAIN.crt" ]]; then
         # echo for using all default values
         echo | prosodyctl --config $PROSODY_CFG cert generate $XMPP_DOMAIN
     fi
 fi
 
-if [[ ! -f /config/certs/$XMPP_AUTH_DOMAIN.crt ]]; then
+if [[ ! -f "/config/certs/$XMPP_AUTH_DOMAIN.crt" ]]; then
     # echo for using all default values
     echo | prosodyctl --config $PROSODY_CFG cert generate $XMPP_AUTH_DOMAIN
 fi
diff --git a/prosody/rootfs/etc/services.d/10-saslauthd/run b/prosody/rootfs/etc/services.d/10-saslauthd/run
index 126f44413c..1f74000a37 100644
--- a/prosody/rootfs/etc/services.d/10-saslauthd/run
+++ b/prosody/rootfs/etc/services.d/10-saslauthd/run
@@ -1,5 +1,5 @@
 #!/usr/bin/with-contenv bash
-if [[ -f /etc/saslauthd.conf ]]; then
+if [[ -f "/etc/saslauthd.conf" ]]; then
   exec s6-setuidgid root saslauthd -a ldap -O /etc/saslauthd.conf -c -m /var/run/saslauthd -n 5 -d
 else
     # if saslauthd should not be started,
diff --git a/prosody/rootfs/etc/services.d/70-register-setup/run b/prosody/rootfs/etc/services.d/70-register-setup/run
index 0de71a2eb9..3d70da7cd7 100755
--- a/prosody/rootfs/etc/services.d/70-register-setup/run
+++ b/prosody/rootfs/etc/services.d/70-register-setup/run
@@ -62,12 +62,6 @@ if [[ -z $JVB_AUTH_PASSWORD ]]; then
     exit 1
 fi
 
-OLD_JVB_AUTH_PASSWORD=passw0rd
-if [[ "$JVB_AUTH_PASSWORD" == "$OLD_JVB_AUTH_PASSWORD" ]]; then
-    echo '[register-setup] FATAL ERROR: JVB auth password must be changed, check the README'
-    exit 1
-fi
-
 # Register focus user
 echo "[register-setup] Registering focus user..."
 OUTPUT=$(prosodyctl --config $PROSODY_CFG shell user create focus@$XMPP_AUTH_DOMAIN $JICOFO_AUTH_PASSWORD 2>&1)
@@ -87,12 +81,7 @@ else
 fi
 
 # Register Jibri user if password is set
-if [[ ! -z $JIBRI_XMPP_PASSWORD ]]; then
-    OLD_JIBRI_XMPP_PASSWORD=passw0rd
-    if [[ "$JIBRI_XMPP_PASSWORD" == "$OLD_JIBRI_XMPP_PASSWORD" ]]; then
-        echo '[register-setup] FATAL ERROR: Jibri auth password must be changed, check the README'
-        exit 1
-    fi
+if [[ -n "$JIBRI_XMPP_PASSWORD" ]]; then
     echo "[register-setup] Registering Jibri user..."
     OUTPUT=$(prosodyctl --config $PROSODY_CFG shell user create $JIBRI_XMPP_USER@$XMPP_AUTH_DOMAIN $JIBRI_XMPP_PASSWORD 2>&1)
     if [ $? -eq 0 ]; then
@@ -105,7 +94,7 @@ fi
 # Register Jibri recorder and Jigasi transcriber in client mode only
 if [[ "$PROSODY_MODE" == "client" ]]; then
     if [[ "$(echo "$ENABLE_RECORDING" | tr '[:upper:]' '[:lower:]')" == "true" ]] || [[ "$ENABLE_RECORDING" == "1" ]]; then
-        if [[ ! -z $JIBRI_RECORDER_PASSWORD ]]; then
+        if [[ -n "$JIBRI_RECORDER_PASSWORD" ]]; then
             echo "[register-setup] Registering Jibri recorder user..."
             OUTPUT=$(prosodyctl --config $PROSODY_CFG shell user create $JIBRI_RECORDER_USER@$XMPP_HIDDEN_DOMAIN $JIBRI_RECORDER_PASSWORD 2>&1)
             if [ $? -eq 0 ]; then
@@ -117,7 +106,7 @@ if [[ "$PROSODY_MODE" == "client" ]]; then
     fi
 
     if [[ "$(echo "$ENABLE_TRANSCRIPTIONS" | tr '[:upper:]' '[:lower:]')" == "true" ]] || [[ "$ENABLE_TRANSCRIPTIONS" == "1" ]]; then
-        if [[ ! -z $JIGASI_TRANSCRIBER_PASSWORD ]]; then
+        if [[ -n "$JIGASI_TRANSCRIBER_PASSWORD" ]]; then
             [ -z "$JIGASI_TRANSCRIBER_USER" ] && JIGASI_TRANSCRIBER_USER="transcriber"
             echo "[register-setup] Registering Jigasi transcriber user..."
             OUTPUT=$(prosodyctl --config $PROSODY_CFG shell user create $JIGASI_TRANSCRIBER_USER@$XMPP_HIDDEN_DOMAIN $JIGASI_TRANSCRIBER_PASSWORD 2>&1)
@@ -131,12 +120,7 @@ if [[ "$PROSODY_MODE" == "client" ]]; then
 fi
 
 # Register Jigasi user if password is set
-if [[ ! -z $JIGASI_XMPP_PASSWORD ]]; then
-    OLD_JIGASI_XMPP_PASSWORD=passw0rd
-    if [[ "$JIGASI_XMPP_PASSWORD" == "$OLD_JIGASI_XMPP_PASSWORD" ]]; then
-        echo '[register-setup] FATAL ERROR: Jigasi auth password must be changed, check the README'
-        exit 1
-    fi
+if [[ -n "$JIGASI_XMPP_PASSWORD" ]]; then
     echo "[register-setup] Registering Jigasi user..."
     OUTPUT=$(prosodyctl --config $PROSODY_CFG shell user create $JIGASI_XMPP_USER@$XMPP_AUTH_DOMAIN $JIGASI_XMPP_PASSWORD 2>&1)
     if [ $? -eq 0 ]; then
diff --git a/release.sh b/release.sh
index 84827a4d2f..e656c2cb0c 100755
--- a/release.sh
+++ b/release.sh
@@ -10,7 +10,7 @@ set -e
 # Don't start a release if the tree is dirty
 #
 
-if [[ ! -z $(git status -s) ]]; then
+if [[ -n $(git status -s) ]]; then
     echo "Git tree is not clean, aborting release!"
     exit 1
 fi
diff --git a/web/rootfs/etc/cont-init.d/10-config b/web/rootfs/etc/cont-init.d/10-config
index 631cc64818..ed6dead19d 100644
--- a/web/rootfs/etc/cont-init.d/10-config
+++ b/web/rootfs/etc/cont-init.d/10-config
@@ -21,7 +21,7 @@ if [[ $DISABLE_HTTPS -ne 1 ]]; then
         fi
 
         ACME_SERVER=""
-        if [[ ! -z $LETSENCRYPT_ACME_SERVER ]]; then
+        if [[ -n "$LETSENCRYPT_ACME_SERVER" ]]; then
             ACME_SERVER="--set-default-ca --server $LETSENCRYPT_ACME_SERVER"
             echo "Using custom ACME server: $LETSENCRYPT_ACME_SERVER"
         fi
@@ -61,7 +61,7 @@ if [[ $DISABLE_HTTPS -ne 1 ]]; then
         fi
     else
         # use self-signed certs
-        if [[ -f /config/keys/cert.key && -f /config/keys/cert.crt ]]; then
+        if [[ -f "/config/keys/cert.key" && -f "/config/keys/cert.crt" ]]; then
             echo "using keys found in /config/keys"
         else
             echo "generating self-signed keys in /config/keys, you can replace these with your own keys if required"
@@ -122,7 +122,7 @@ fi
 tpl /defaults/nginx.conf > /config/nginx/nginx.conf
 
 tpl /defaults/meet.conf > /config/nginx/meet.conf
-if [[ -f /config/nginx/custom-meet.conf ]]; then
+if [[ -f "/config/nginx/custom-meet.conf" ]]; then
     cat /config/nginx/custom-meet.conf >> /config/nginx/meet.conf
 fi
 
@@ -132,11 +132,11 @@ tpl /defaults/default > /config/nginx/site-confs/default
 
 tpl /defaults/system-config.js > /config/config.js
 tpl /defaults/settings-config.js >> /config/config.js
-if [[ -f /config/custom-config.js ]]; then
+if [[ -f "/config/custom-config.js" ]]; then
     cat /config/custom-config.js >> /config/config.js
 fi
 
 cp /defaults/interface_config.js /config/interface_config.js
-if [[ -f /config/custom-interface_config.js ]]; then
+if [[ -f "/config/custom-interface_config.js" ]]; then
     cat /config/custom-interface_config.js >> /config/interface_config.js
 fi
diff --git a/web/rootfs/etc/services.d/jaas-account/run b/web/rootfs/etc/services.d/jaas-account/run
index dcb85cc208..f79c9207b2 100644
--- a/web/rootfs/etc/services.d/jaas-account/run
+++ b/web/rootfs/etc/services.d/jaas-account/run
@@ -17,9 +17,9 @@ function stop_service() {
   exit 0
 }
 
-if [[ $DISABLE_HTTPS -ne 1 ]] && [[ $ENABLE_LETSENCRYPT -eq 1 ]] && [[ $ENABLE_JAAS_COMPONENTS -eq 1 ]]  && [[ ! -z $EMAIL ]] && [[ ! -z $DOMAIN ]]; then
+if [[ "$DISABLE_HTTPS" -ne 1 ]] && [[ "$ENABLE_LETSENCRYPT" -eq 1 ]] && [[ "$ENABLE_JAAS_COMPONENTS" -eq 1 ]]  && [[ -n "$EMAIL" ]] && [[ -n "$DOMAIN" ]]; then
 
-if [ -f $JAAS_ACCOUNT_FILE ]; then
+if [ -f "$JAAS_ACCOUNT_FILE" ]; then
     echo "JaaS account already exists"
     stop_service
 fi
@@ -119,4 +119,4 @@ done)
 rm ${CHALLENGE_FILE} || true
 
 fi
-stop_service
\ No newline at end of file
+stop_service