Deploy docker file with pdf encryption

Dockerfile

@@ -7,10 +7,11 @@ ENV MAX_FILE_UPLOADS=201
 ENV PDF_STORAGE_PATH=/data
 ENV DISABLE_ORGANIZATION=false
 ENV DEFAULT_LANGUAGE=fr_FR.UTF-8
+ENV PDF_STORAGE_ENCRYPTION=true
 
 RUN apt update && \
     apt install -y vim locales gettext-base librsvg2-bin pdftk imagemagick potrace ghostscript && \
-    docker-php-ext-install gettext && \
+    docker-php-ext-install gettext gpg && \
     rm -rf /var/lib/apt/lists/*
 
 COPY . /usr/local/signaturepdf

config/config.ini.tpl

@@ -9,3 +9,6 @@ DISABLE_ORGANIZATION=${DISABLE_ORGANIZATION}
 
 ; Manage demo link pdf : true (by default, show), false (hide), or custom link
 PDF_DEMO_LINK=${PDF_DEMO_LINK}
+
+; Encryption activation (default activation if GPG is installed)
+PDF_STORAGE_ENCRYPTION=${PDF_STORAGE_ENCRYPTION}