diff --git a/.env.sample b/.env.sample
index be77cb2..6ddc5b9 100644
--- a/.env.sample
+++ b/.env.sample
@@ -20,8 +20,8 @@ LETS_ENCRYPT_ENV=production
 # Every new user is per default subscriber, uncomment to change it
 #DEFAULT_USER_ROLE=administrator
 
-# Uncomment to install PHP Composer
-#COMPOSER=1
+# PHP composer for plugin installation
+#COMPOSE_FILE="$COMPOSE_FILE:compose.composer.yml"
 
 #WORDPRESS_DEBUG=true
 
diff --git a/abra.sh b/abra.sh
index 0c6384f..b066de1 100644
--- a/abra.sh
+++ b/abra.sh
@@ -1,5 +1,5 @@
 export PHP_UPLOADS_CONF_VERSION=v3
-export ENTRYPOINT_CONF_VERSION=v5
+export ENTRYPOINT_CONF_VERSION=v6
 export ENTRYPOINT_MAILRELAY_CONF_VERSION=v2
 export MSMTP_CONF_VERSION=v4
 
@@ -75,77 +75,3 @@ set_authentik(){
 fix_mysql() {
   echo "ALTER TABLE mysql.column_stats MODIFY histogram longblob; ALTER TABLE mysql.column_stats MODIFY hist_type enum('SINGLE_PREC_HB','DOUBLE_PREC_HB','JSON_HB');" | mysql -u root -p$(cat /run/secrets/db_root_password)
 }
-
-sub_wp() {
-  CONTAINER=$(docker container ls -f "Name=${STACK_NAME}_app" --format '{{ .ID }}')
-  if [ -z "$CONTAINER" ]; then
-    error "Can't find a container for ${STACK_NAME}_app"
-    exit
-  fi
-  debug "Using Container ID ${CONTAINER}"
-
-  # FIXME 3wc: we're fighting the Wordpress image, which recommends a named
-  # volume for /var/www/html -- this used to work fine using --volumes-from
-  # because the actual MySQL password was inserted into the generated
-  # wp-config.php -- but as of Wordpress 5.7.0, wp-config loads data straight
-  # from the environment, which requires Docker secrets to work, which only work
-  # in swarm services (not one-off `docker run` commands). Defining a `cli`
-  # service in compose.yml almost works, but there's no volumes_from: in Compose
-  # V3, and without it then the `cli` service can't access Wordpress core.
-  # See https://git.autonomic.zone/coop-cloud/wordpress/issues/21
-  warning "Slowly looking up MySQL password..."
-  silence
-  abra__service_="app"
-  DB_PASSWORD="$(sub_app_run cat "/run/secrets/db_password")"
-  unsilence
-
-  # shellcheck disable=SC2154,SC2086
-  docker run -it \
-	--volumes-from "$CONTAINER" \
-	--network "container:$CONTAINER" \
-	-u xfs:xfs \
-    -e WORDPRESS_DB_HOST=db \
-    -e WORDPRESS_DB_USER=wordpress \
-    -e WORDPRESS_DB_PASSWORD="${DB_PASSWORD}" \
-    -e WORDPRESS_DB_NAME=wordpress \
-    -e WORDPRESS_CONFIG_EXTRA="${WORDPRESS_CONFIG_EXTRA}" \
-	wordpress:cli wp ${abra__args_[*]}
-}
-
-abra_backup_app() {
-  _abra_backup_dir "app:/var/www/html/wp-content"
-}
-
-abra_backup_db() {
-  _abra_backup_mysql "db" "wordpress"
-}
-
-abra_backup() {
-  abra_backup_app && abra_backup_db
-}
-
-abra_restore_app() {
-  # shellcheck disable=SC2034
-  {
-	abra__src_="-"
-	abra__dst_="app:/var/www/html/"
-  }
-
-  zcat "$@" | sub_app_cp
-
-  success "Restored 'app'"
-}
-
-abra_restore_db() {
-  # 3wc: unlike abra_backup_db, we can assume abra__service_ will be 'db' if we
-  # got this far..
-
-  # shellcheck disable=SC2034
-  abra___no_tty="true"
-
-  DB_ROOT_PASSWORD=$(sub_app_run cat /run/secrets/db_root_password)
-
-  zcat "$@" | sub_app_run mysql -u root -p"$DB_ROOT_PASSWORD" wordpress
-
-  success "Restored 'db'"
-}
diff --git a/compose.composer.yml b/compose.composer.yml
new file mode 100644
index 0000000..0b97fe1
--- /dev/null
+++ b/compose.composer.yml
@@ -0,0 +1,14 @@
+---
+version: "3.8"
+
+services:
+  app:
+    volumes:
+      - "composer:/var/www/html/composer"
+    environment:
+      - ENABLE_COMPOSER=1
+      - COMPOSER=composer/composer.json
+      - COMPOSER_VENDOR_DIR=composer/vendor
+
+volumes:
+  composer:
diff --git a/entrypoint.sh.tmpl b/entrypoint.sh.tmpl
index 503d80f..72a8776 100644
--- a/entrypoint.sh.tmpl
+++ b/entrypoint.sh.tmpl
@@ -7,9 +7,9 @@ docker-php-ext-install {{ env "PHP_EXTENSIONS" }}
 curl -z /usr/local/bin/wp -o /usr/local/bin/wp https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar
 chmod +x /usr/local/bin/wp
 
-{{ if eq (env "COMPOSER") "1" }}
+{{ if eq (env "ENABLE_COMPOSER") "1" }}
 mkdir -p /var/www/.composer
-chown www-data:www-data /var/www/.composer
+chown www-data:www-data /var/www/.composer /var/www/html/composer
 
 curl https://getcomposer.org/installer -o /tmp/composer-setup.php
 php -r "if (hash_file('sha384', '/tmp/composer-setup.php') === 'e21205b207c3ff031906575712edab6f13eb0b361f2085f1f1237b7126d785e826a450292b6cfd1d64d92e6563bbde02') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"