diff --git a/Dockerfile b/Dockerfile
index 3cad721..dbc3ee8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,6 @@
-FROM ghcr.io/linuxserver/baseimage-alpine-nginx:3.15
+# syntax=docker/dockerfile:1
+
+FROM ghcr.io/linuxserver/baseimage-alpine-nginx:3.17
 
 # set version label
 ARG BUILD_DATE
@@ -18,29 +20,28 @@ RUN \
   apk add --no-cache \
     fontconfig \
     memcached \
-    php8-ctype \
-    php8-curl \
-    php8-dom \
-    php8-gd \
-    php8-ldap \
-    php8-mbstring \
-    php8-mysqlnd \
-    php8-openssl \
-    php8-pdo_mysql \
-    php8-pecl-memcached \
-    php8-phar \
-    php8-simplexml \
-    php8-tokenizer \
+    php81-ctype \
+    php81-curl \
+    php81-dom \
+    php81-gd \
+    php81-ldap \
+    php81-mbstring \
+    php81-mysqlnd \
+    php81-openssl \
+    php81-pdo_mysql \
+    php81-pecl-memcached \
+    php81-phar \
+    php81-simplexml \
+    php81-tokenizer \
     qt5-qtbase \
-    tar \
     ttf-freefont && \
   apk add --no-cache \
     --repository=http://dl-cdn.alpinelinux.org/alpine/v3.14/community \
     wkhtmltopdf && \
   echo "**** configure php-fpm to pass env vars ****" && \
-  sed -E -i 's/^;?clear_env ?=.*$/clear_env = no/g' /etc/php8/php-fpm.d/www.conf && \
-  grep -qxF 'clear_env = no' /etc/php8/php-fpm.d/www.conf || echo 'clear_env = no' >> /etc/php8/php-fpm.d/www.conf && \
-  echo "env[PATH] = /usr/local/bin:/usr/bin:/bin" >> /etc/php8/php-fpm.conf && \
+  sed -E -i 's/^;?clear_env ?=.*$/clear_env = no/g' /etc/php81/php-fpm.d/www.conf && \
+  grep -qxF 'clear_env = no' /etc/php81/php-fpm.d/www.conf || echo 'clear_env = no' >> /etc/php81/php-fpm.d/www.conf && \
+  echo "env[PATH] = /usr/local/bin:/usr/bin:/bin" >> /etc/php81/php-fpm.conf && \
   echo "**** fetch bookstack ****" && \
   mkdir -p\
     /app/www && \
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index af97fb0..ca91f52 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -1,4 +1,6 @@
-FROM ghcr.io/linuxserver/baseimage-alpine-nginx:arm64v8-3.15
+# syntax=docker/dockerfile:1
+
+FROM ghcr.io/linuxserver/baseimage-alpine-nginx:arm64v8-3.17
 
 # set version label
 ARG BUILD_DATE
@@ -18,29 +20,28 @@ RUN \
   apk add --no-cache \
     fontconfig \
     memcached \
-    php8-ctype \
-    php8-curl \
-    php8-dom \
-    php8-gd \
-    php8-ldap \
-    php8-mbstring \
-    php8-mysqlnd \
-    php8-openssl \
-    php8-pdo_mysql \
-    php8-pecl-memcached \
-    php8-phar \
-    php8-simplexml \
-    php8-tokenizer \
+    php81-ctype \
+    php81-curl \
+    php81-dom \
+    php81-gd \
+    php81-ldap \
+    php81-mbstring \
+    php81-mysqlnd \
+    php81-openssl \
+    php81-pdo_mysql \
+    php81-pecl-memcached \
+    php81-phar \
+    php81-simplexml \
+    php81-tokenizer \
     qt5-qtbase \
-    tar \
     ttf-freefont && \
   apk add --no-cache \
     --repository=http://dl-cdn.alpinelinux.org/alpine/v3.14/community \
     wkhtmltopdf && \
   echo "**** configure php-fpm to pass env vars ****" && \
-  sed -E -i 's/^;?clear_env ?=.*$/clear_env = no/g' /etc/php8/php-fpm.d/www.conf && \
-  grep -qxF 'clear_env = no' /etc/php8/php-fpm.d/www.conf || echo 'clear_env = no' >> /etc/php8/php-fpm.d/www.conf && \
-  echo "env[PATH] = /usr/local/bin:/usr/bin:/bin" >> /etc/php8/php-fpm.conf && \
+  sed -E -i 's/^;?clear_env ?=.*$/clear_env = no/g' /etc/php81/php-fpm.d/www.conf && \
+  grep -qxF 'clear_env = no' /etc/php81/php-fpm.d/www.conf || echo 'clear_env = no' >> /etc/php81/php-fpm.d/www.conf && \
+  echo "env[PATH] = /usr/local/bin:/usr/bin:/bin" >> /etc/php81/php-fpm.conf && \
   echo "**** fetch bookstack ****" && \
   mkdir -p\
     /app/www && \
diff --git a/Dockerfile.armhf b/Dockerfile.armhf
index eaf7a8f..ce376d8 100644
--- a/Dockerfile.armhf
+++ b/Dockerfile.armhf
@@ -1,4 +1,6 @@
-FROM ghcr.io/linuxserver/baseimage-alpine-nginx:arm32v7-3.15
+# syntax=docker/dockerfile:1
+
+FROM ghcr.io/linuxserver/baseimage-alpine-nginx:arm32v7-3.17
 
 # set version label
 ARG BUILD_DATE
@@ -18,29 +20,28 @@ RUN \
   apk add --no-cache \
     fontconfig \
     memcached \
-    php8-ctype \
-    php8-curl \
-    php8-dom \
-    php8-gd \
-    php8-ldap \
-    php8-mbstring \
-    php8-mysqlnd \
-    php8-openssl \
-    php8-pdo_mysql \
-    php8-pecl-memcached \
-    php8-phar \
-    php8-simplexml \
-    php8-tokenizer \
+    php81-ctype \
+    php81-curl \
+    php81-dom \
+    php81-gd \
+    php81-ldap \
+    php81-mbstring \
+    php81-mysqlnd \
+    php81-openssl \
+    php81-pdo_mysql \
+    php81-pecl-memcached \
+    php81-phar \
+    php81-simplexml \
+    php81-tokenizer \
     qt5-qtbase \
-    tar \
     ttf-freefont && \
   apk add --no-cache \
     --repository=http://dl-cdn.alpinelinux.org/alpine/v3.14/community \
     wkhtmltopdf && \
   echo "**** configure php-fpm to pass env vars ****" && \
-  sed -E -i 's/^;?clear_env ?=.*$/clear_env = no/g' /etc/php8/php-fpm.d/www.conf && \
-  grep -qxF 'clear_env = no' /etc/php8/php-fpm.d/www.conf || echo 'clear_env = no' >> /etc/php8/php-fpm.d/www.conf && \
-  echo "env[PATH] = /usr/local/bin:/usr/bin:/bin" >> /etc/php8/php-fpm.conf && \
+  sed -E -i 's/^;?clear_env ?=.*$/clear_env = no/g' /etc/php81/php-fpm.d/www.conf && \
+  grep -qxF 'clear_env = no' /etc/php81/php-fpm.d/www.conf || echo 'clear_env = no' >> /etc/php81/php-fpm.d/www.conf && \
+  echo "env[PATH] = /usr/local/bin:/usr/bin:/bin" >> /etc/php81/php-fpm.conf && \
   echo "**** fetch bookstack ****" && \
   mkdir -p\
     /app/www && \
diff --git a/README.md b/README.md
index f7adb9d..94257dd 100644
--- a/README.md
+++ b/README.md
@@ -276,6 +276,7 @@ Once registered you can define the dockerfile to use with `-f Dockerfile.aarch64
 
 ## Versions
 
+* **20.08.22:** - Rebase to alpine 3.17 with php8.1.
 * **16.01.23:** - Wrap `.env` values in quotes.
 * **05.01.23:** - Fix db password setting (sed escape `&`).
 * **21.12.22:** - Update db info in .env file when env vars are updated.
diff --git a/readme-vars.yml b/readme-vars.yml
index 1db8a23..6ae17d1 100644
--- a/readme-vars.yml
+++ b/readme-vars.yml
@@ -104,6 +104,7 @@ app_setup_block: |
 
 # changelog
 changelogs:
+  - { date: "20.08.22:", desc: "Rebase to alpine 3.17 with php8.1." }
   - { date: "16.01.23:", desc: "Wrap `.env` values in quotes." }
   - { date: "05.01.23:", desc: "Fix db password setting (sed escape `&`)." }
   - { date: "21.12.22:", desc: "Update db info in .env file when env vars are updated." }
diff --git a/root/etc/s6-overlay/s6-rc.d/init-bookstack-config/dependencies.d/init-nginx-end b/root/etc/s6-overlay/s6-rc.d/init-bookstack-config/dependencies.d/init-nginx-end
new file mode 100644
index 0000000..e69de29
diff --git a/root/etc/cont-init.d/50-config b/root/etc/s6-overlay/s6-rc.d/init-bookstack-config/run
old mode 100644
new mode 100755
similarity index 98%
rename from root/etc/cont-init.d/50-config
rename to root/etc/s6-overlay/s6-rc.d/init-bookstack-config/run
index cb2f3ee..616f6fa
--- a/root/etc/cont-init.d/50-config
+++ b/root/etc/s6-overlay/s6-rc.d/init-bookstack-config/run
@@ -4,7 +4,7 @@
 if [ -d /app/www-tmp ]; then
     echo "New container detected. Setting up app folder and fixing permissions."
     mv /app/www-tmp /app/www
-    chown -R abc:abc /app/www
+    lsiown -R abc:abc /app/www
 fi
 
 # create directory structure
@@ -145,8 +145,8 @@ if [ -z "${CI_RUN+x}" ]; then
     php /app/www/artisan migrate --force
 fi
 
-# set permissions
-chown -R abc:abc \
+# permissions
+lsiown -R abc:abc \
     /config
 
 # set lockfile to avoid DB waits for this specific container
diff --git a/root/etc/s6-overlay/s6-rc.d/init-bookstack-config/type b/root/etc/s6-overlay/s6-rc.d/init-bookstack-config/type
new file mode 100644
index 0000000..bdd22a1
--- /dev/null
+++ b/root/etc/s6-overlay/s6-rc.d/init-bookstack-config/type
@@ -0,0 +1 @@
+oneshot
diff --git a/root/etc/s6-overlay/s6-rc.d/init-bookstack-config/up b/root/etc/s6-overlay/s6-rc.d/init-bookstack-config/up
new file mode 100644
index 0000000..c9f39e1
--- /dev/null
+++ b/root/etc/s6-overlay/s6-rc.d/init-bookstack-config/up
@@ -0,0 +1 @@
+/etc/s6-overlay/s6-rc.d/init-bookstack-config/run
diff --git a/root/etc/s6-overlay/s6-rc.d/svc-memcached/dependencies.d/init-services b/root/etc/s6-overlay/s6-rc.d/svc-memcached/dependencies.d/init-services
new file mode 100644
index 0000000..e69de29
diff --git a/root/etc/services.d/memcached/run b/root/etc/s6-overlay/s6-rc.d/svc-memcached/run
old mode 100644
new mode 100755
similarity index 100%
rename from root/etc/services.d/memcached/run
rename to root/etc/s6-overlay/s6-rc.d/svc-memcached/run
diff --git a/root/etc/s6-overlay/s6-rc.d/svc-memcached/type b/root/etc/s6-overlay/s6-rc.d/svc-memcached/type
new file mode 100644
index 0000000..5883cff
--- /dev/null
+++ b/root/etc/s6-overlay/s6-rc.d/svc-memcached/type
@@ -0,0 +1 @@
+longrun
diff --git a/root/etc/s6-overlay/s6-rc.d/user/contents.d/init-bookstack-config b/root/etc/s6-overlay/s6-rc.d/user/contents.d/init-bookstack-config
new file mode 100644
index 0000000..e69de29
diff --git a/root/etc/s6-overlay/s6-rc.d/user/contents.d/svc-memcached b/root/etc/s6-overlay/s6-rc.d/user/contents.d/svc-memcached
new file mode 100644
index 0000000..e69de29