added option to add ocr

nextcloud/Dockerfile

@@ -8,10 +8,23 @@ ENV NEXTCLOUD_PATH="/data/config/www/nextcloud"
 # Set shell
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
-# Add OCR
-# RUN apk add --no-cache \
-#    tesseract-ocr \
-#    tesseract-ocr-data-deu
+# Add bashio
+RUN apk add --no-cache \
+    curl \
+    jq \
+    && curl -J -L -o /tmp/bashio.tar.gz \
+    "https://github.com/hassio-addons/bashio/archive/v0.7.1.tar.gz" \
+    && mkdir /tmp/bashio \
+    && tar zxvf \
+    /tmp/bashio.tar.gz \
+    --strip 1 -C /tmp/bashio \
+    \
+    && mv /tmp/bashio/lib /usr/lib/bashio \
+    && ln -s /usr/lib/bashio/bashio /usr/bin/bashio \
+    && rm -fr \
+    /tmp/* \
+    /var/{cache,log}/* \
+    /var/lib/apt/lists/*
 
 # modify/copy files
 RUN sed -i "s|data|share/nextcloud|g" /etc/cont-init.d/* \

nextcloud/config.json

@@ -28,12 +28,14 @@
   "options": {
     "PUID": 1001,
     "PGID": 1001, 
-    "OCR": false
+    "OCR": false,
+    "OCR-LANG": "eng"
   },
   "schema": {
     "PUID": "int",
     "PGID": "int",
     "OCR": "bool?",
+    "OCR-LANG": "str?",
     "TZ": "str?"
   }
 }

nextcloud/root/etc/cont-init.d/51-install_options

@@ -0,0 +1,21 @@
+#!/usr/bin/with-contenv bashio
+
+declare CONFIG
+declare OCR_LANG
+
+CONFIG=$(</share/nextcloud_ocr/settings.json)
+OCR_LANG=$(bashio::config 'OCR-LANG')
+
+# Install OCR if requested
+if [ $(bashio::config 'OCR') = true ]; then
+bashio::log.info 'Installing OCR' && \
+bashio::log.info 'Select OCR language from https://github.com/tesseract-ocr/langdata...' && \
+apk add --no-cache \
+    tesseract-ocr \
+    tesseract-ocr-data-${OCR_LANG}
+elif [ $(bashio::config 'OCR') = false ]; then
+bashio::log.info 'Removing OCR' && \
+apk del \
+    tesseract-ocr \
+    tesseract-ocr-data-${OCR_LANG}
+fi