Feat/mila/blog social preview (#481)

* pictures script

* wip preview image processing

* universal image processign script

* bash for generating preview images

* add CI script

* do not force the push

---------

Co-authored-by: generall <andrey@vasnetsov.com>

automation/gen-all-blogs-previews.sh

@@ -0,0 +1,69 @@
+#!/bin/bash
+
+# directory of the current script
+
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+
+PATH_TO_BLOGS="$DIR/../qdrant-landing/content/blog"
+
+STATIC_FOLDER=$(realpath "$DIR/../qdrant-landing/static")
+
+
+function get_value_from_md() {
+    local key=$1
+    local file=$2
+    local value=$(grep -m 1 "^$key:" "$file" | sed "s/^$key: //")
+    echo "$value"
+}
+
+
+function process_blog() {
+    echo "-----"
+
+    echo "Processing $1 file..."
+
+    # Check if draft
+    DRAFT=$(get_value_from_md "draft" "$1")
+
+    if [ "$DRAFT" == "true" ]; then
+        echo "Draft. Skipping"
+        return
+    fi
+
+    SLUG=$(get_value_from_md "slug" "$1")
+
+    if [ -z "$SLUG" ]; then        
+        SLUG=$(basename "$1" | sed 's/\.md$//')
+    fi
+
+    echo "Slug: $SLUG"
+
+    IMAGE_KEY="preview_image" # ToDo: change to generic image key
+
+    SOURCE_IMAGE_PATH=$(get_value_from_md "${IMAGE_KEY}" "$1")
+
+    if [ -z "$SOURCE_IMAGE_PATH" ]; then
+        echo "No preview image for $1"
+        return
+    fi
+
+    FULL_IMAGE_PATH="${STATIC_FOLDER}/${SOURCE_IMAGE_PATH}"
+
+    echo "Source image path: $FULL_IMAGE_PATH"
+
+    PATH_TO_IMAGE="${FULL_IMAGE_PATH}" \
+    bash ${DIR}/process-blog-img.sh "$FULL_IMAGE_PATH" "$SLUG"
+}
+
+
+
+for f in $PATH_TO_BLOGS/*.md; do
+    # Absolute path to the file
+
+    abs_path=$(realpath "$f")
+
+
+    process_blog "$abs_path"
+done
+