diff --git a/Dockerfile b/Dockerfile
index ef57a0a..ba14fcb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-FROM ghcr.io/linuxserver/baseimage-alpine:3.19
+FROM ghcr.io/linuxserver/baseimage-alpine:3.20
 
 # set version label
 ARG BUILD_DATE
@@ -29,9 +29,10 @@ RUN \
   pip install -U --no-cache-dir \
     pip \
     wheel && \
-  pip install -U --no-cache-dir --find-links https://wheel-index.linuxserver.io/alpine-3.19/ \
+  pip install -U --no-cache-dir --find-links https://wheel-index.linuxserver.io/alpine-3.20/ \
     cryptography \
     python-ldap=="${LDAP_VERSION}" && \
+  printf "Linuxserver.io version: ${VERSION}\nBuild-date: ${BUILD_DATE}" > /build_version && \
   echo "**** cleanup ****" && \
   apk del --purge \
     build-dependencies && \
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index 8d6ebb3..84e0c4f 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 
-FROM ghcr.io/linuxserver/baseimage-alpine:arm64v8-3.19
+FROM ghcr.io/linuxserver/baseimage-alpine:arm64v8-3.20
 
 # set version label
 ARG BUILD_DATE
@@ -29,9 +29,10 @@ RUN \
   pip install -U --no-cache-dir \
     pip \
     wheel && \
-  pip install -U --no-cache-dir --find-links https://wheel-index.linuxserver.io/alpine-3.19/ \
+  pip install -U --no-cache-dir --find-links https://wheel-index.linuxserver.io/alpine-3.20/ \
     cryptography \
     python-ldap=="${LDAP_VERSION}" && \
+  printf "Linuxserver.io version: ${VERSION}\nBuild-date: ${BUILD_DATE}" > /build_version && \
   echo "**** cleanup ****" && \
   apk del --purge \
     build-dependencies && \
diff --git a/Jenkinsfile b/Jenkinsfile
index 88a01e2..4ea4d1d 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -33,8 +33,8 @@ pipeline {
     CI_PORT='9000'
     CI_SSL='false'
     CI_DELAY='60'
-    CI_DOCKERENV='TZ=US/Pacific'
-    CI_AUTH='user:password'
+    CI_DOCKERENV=''
+    CI_AUTH=''
     CI_WEBPATH='/test'
   }
   stages {
diff --git a/jenkins-vars.yml b/jenkins-vars.yml
index c033ca7..1afb6cd 100644
--- a/jenkins-vars.yml
+++ b/jenkins-vars.yml
@@ -6,7 +6,6 @@ external_type: pip_version
 release_type: stable
 release_tag: latest
 ls_branch: master
-build_armhf: false
 repo_vars:
   - EXT_RELEASE_TYPE = 'pip_version'
   - EXT_PIP = 'python-ldap'
@@ -24,6 +23,6 @@ repo_vars:
   - CI_PORT='9000'
   - CI_SSL='false'
   - CI_DELAY='60'
-  - CI_DOCKERENV='TZ=US/Pacific'
-  - CI_AUTH='user:password'
+  - CI_DOCKERENV=''
+  - CI_AUTH=''
   - CI_WEBPATH='/test'
diff --git a/readme-vars.yml b/readme-vars.yml
index 75d44a4..82a6fdf 100644
--- a/readme-vars.yml
+++ b/readme-vars.yml
@@ -13,17 +13,10 @@ available_architectures:
   - { arch: "{{ arch_arm64 }}", tag: "arm64v8-latest"}
 
 # container parameters
-common_param_env_vars_enabled: false
-param_container_name: "{{ project_name }}"
-param_usage_include_vols: false
-param_volumes: ""
 param_usage_include_ports: true
 param_ports:
   - { external_port: "8888", internal_port: "8888", port_desc: "the port for ldap auth daemon" }
   - { external_port: "9000", internal_port: "9000", port_desc: "the port for ldap login page" }
-param_usage_include_env: true
-param_env_vars:
-  - { env_var: "TZ", env_value: "Europe/London", desc: "Specify a timezone to use EG Europe/London" }
 
 # optional container parameters
 opt_param_usage_include_env: true
@@ -42,6 +35,7 @@ app_setup_block: |
 
 # changelog
 changelogs:
+  - { date: "30.06.24:", desc: "Rebase to Alpine 3.20."}
   - { date: "23.12.23:", desc: "Rebase to Alpine 3.19."}
   - { date: "20.06.23:", desc: "Sync upstream changes, including the ability to disable referrals with `X-Ldap-DisableReferrals`." }
   - { date: "25.05.23:", desc: "Rebase to Alpine 3.18, deprecate armhf." }
diff --git a/root/etc/s6-overlay/s6-rc.d/init-ldap-config/run b/root/etc/s6-overlay/s6-rc.d/init-ldap-config/run
index 58ace5d..25cf1b7 100755
--- a/root/etc/s6-overlay/s6-rc.d/init-ldap-config/run
+++ b/root/etc/s6-overlay/s6-rc.d/init-ldap-config/run
@@ -3,7 +3,7 @@
 
 # generate fernet key for ldap if it doesn't exist
 if grep -q 'REPLACEWITHFERNETKEY' /app/ldap-backend-app.py; then
-    if [ -z "${FERNETKEY}" ]; then
+    if [[ -z "${FERNETKEY}" ]]; then
         KEY=$(python3 /app/fernet-key.py)
         echo "generated fernet key"
     elif ! python3 -c "from cryptography.fernet import Fernet; Fernet(b'${FERNETKEY}').encrypt(b'my deep dark secret')" 2>/dev/null; then