diff --git a/.github/workflows/release_testing.yml b/.github/workflows/release_testing.yml
new file mode 100644
index 0000000..a5a6464
--- /dev/null
+++ b/.github/workflows/release_testing.yml
@@ -0,0 +1,52 @@
+name: Build and push testing image
+
+on:
+  schedule:
+  - cron: '0 3 * * *'
+  workflow_dispatch:
+
+env:
+  DOTCLEAR_IMAGE: jcpd/docker-dotclear
+  DOTCLEAR_CANAL: testing
+
+jobs:
+  do_image:
+    name: Build testing image and push to Docker hub
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+      contents: read
+      attestations: write
+      id-token: write
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_TOKEN }}
+
+      - name: Build and push image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          sbom: true
+          push: true
+          tags: ${{ env.DOTCLEAR_IMAGE }}:${{ env.DOTCLEAR_CANAL }}
+          build-args: CANAL=${{ env.DOTCLEAR_CANAL }}
+          platforms: linux/386,linux/amd64,linux/arm/V6
+
+      - name: Send Telegram Message Ok
+        uses: appleboy/telegram-action@master
+        env:
+          GITHUB_CONTEXT: ${{toJSON(github)}}
+        with:
+          to: ${{ secrets.TELEGRAM_ID }}
+          token: ${{ secrets.TELEGRAM_TOKEN }}
+          format: markdown
+          message: Image __${{ env.DOTCLEAR_IMAGE }}:${{ env.DOTCLEAR_CANAL }}__ successfully generated.
diff --git a/docker-entrypoint.sh b/docker-entrypoint.sh
index eecba2c..e71c080 100644
--- a/docker-entrypoint.sh
+++ b/docker-entrypoint.sh
@@ -38,12 +38,12 @@ else
 fi
 
 # DEBUG mode for unstable release
-if [ "$CNL_DOTCLEAR" == "unstable" ]; then
-	echo >&2 "Enabling Dotclear DEBUG mode"
-	sed -i -e "s/ \/\*== DC_DEBUG ==/ \/\/\*== DC_DEBUG ==/g" /var/www/dotclear/app/src/Config.php
-else
+if [ "$CNL_DOTCLEAR" == "stable" ]; then
 	echo >&2 "Disabling Dotclear DEBUG mode"
 	sed -i -e "s/ \/\/\*== DC_DEBUG ==/ \/\*== DC_DEBUG ==/g" /var/www/dotclear/app/src/Config.php
+else
+	echo >&2 "Enabling Dotclear DEBUG mode"
+	sed -i -e "s/ \/\*== DC_DEBUG ==/ \/\/\*== DC_DEBUG ==/g" /var/www/dotclear/app/src/Config.php
 fi
 
 # Fix www permissions
diff --git a/etc/testing-php.ini b/etc/testing-php.ini
new file mode 100644
index 0000000..9e5e45f
--- /dev/null
+++ b/etc/testing-php.ini
@@ -0,0 +1,118 @@
+; docker-dotclear:latest
+; /etc/phpXX/php.ini
+; PHP configuration
+
+[PHP]
+
+engine = Onn
+short_open_tag = Off
+precision = 14
+output_buffering = 4096
+zlib.output_compression = Off
+implicit_flush = Off
+unserialize_callback_func =
+serialize_precision = -1
+disable_functions =
+disable_classes =
+zend.enable_gc = On
+zend.exception_ignore_args = On
+zend.exception_string_param_max_len = 0
+
+expose_php = Off
+
+max_execution_time = 30
+max_input_time = 60
+memory_limit = 256M
+max_input_vars = 1500
+
+error_reporting = E_COMPILE_ERROR|E_RECOVERABLE_ERROR|E_ERROR|E_CORE_ERROR
+display_errors = Off
+display_startup_errors = Off
+log_errors = On
+ignore_repeated_errors = Off
+ignore_repeated_source = Off
+report_memleaks = On
+error_log = /dev/stderr
+
+variables_order = "GPCS"
+request_order = "GP"
+register_argc_argv = Off
+auto_globals_jit = On
+post_max_size = 100M
+auto_prepend_file =
+auto_append_file =
+default_mimetype = "text/html"
+default_charset = "UTF-8"
+
+include_path = ".:/usr/share/php83"
+doc_root =
+user_dir =
+enable_dl = Off
+
+file_uploads = On
+upload_max_filesize = 10M
+max_file_uploads = 100
+
+allow_url_fopen = On
+allow_url_include = Off
+default_socket_timeout = 60
+
+[CLI Server]
+cli_server.color = On
+
+[mail function]
+SMTP = localhost
+smtp_port = 25
+mail.add_x_header = Off
+mail.mixed_lf_and_crlf = Off
+
+[MySQLi]
+mysqli.max_persistent = -1
+mysqli.allow_persistent = On
+mysqli.max_links = -1
+mysqli.default_port = 3306
+mysqli.default_socket =
+mysqli.default_host =
+mysqli.default_user =
+mysqli.default_pw =
+
+[PostgreSQL]
+pgsql.allow_persistent = On
+pgsql.auto_reset_persistent = Off
+pgsql.max_persistent = -1
+pgsql.max_links = -1
+pgsql.ignore_notice = 0
+pgsql.log_notice = 0
+
+[Session]
+session.save_handler = files
+session.use_strict_mode = 0
+session.use_cookies = 1
+session.use_only_cookies = 1
+session.name = PHPSESSID
+session.auto_start = 0
+session.cookie_lifetime = 0
+session.cookie_path = /
+session.cookie_domain =
+session.cookie_httponly =
+session.cookie_samesite =
+session.serialize_handler = php
+session.gc_probability = 1
+session.gc_divisor = 1000
+session.gc_maxlifetime = 1440
+session.referer_check =
+session.cache_limiter = nocache
+session.cache_expire = 180
+session.use_trans_sid = 0
+session.sid_length = 26
+session.trans_sid_tags = "a=href,area=href,frame=src,form="
+session.sid_bits_per_character = 5
+
+[opcache]
+opcache.enable=1
+opcache.enable_cli=1
+opcache.memory_consumption=128
+opcache.interned_strings_buffer=8
+opcache.max_accelerated_files=4000
+opcache.revalidate_freq=2
+