fix docker image and gh actions

.github/workflows/docker-build-and-push.yml

@@ -24,6 +24,9 @@ jobs:
         with:
           go-version: 1.22
 
+      - name: Install mupdf
+        run: sudo apt-get install -y mupdf
+
       - name: Install dependencies
         run: go mod download
 

Dockerfile

@@ -39,7 +39,7 @@ RUN npm run build
 FROM alpine:latest
 
 # Install necessary CA certificates
-RUN apk --no-cache add ca-certificates
+RUN apk --no-cache add ca-certificates mupdf-dev
 
 # Set the working directory inside the container
 WORKDIR /app/