Update Dockerfile

Dockerfile

@@ -6,11 +6,12 @@ WORKDIR /app
 # Install build dependencies
 RUN apk add --no-cache git ca-certificates
 
-# Copy go mod files
-COPY go.mod go.sum ./
+# Copy go mod files safely handling missing or mismatched sum files
+COPY go.mod ./
+COPY go.sum* ./
 
-# Download dependencies
-RUN go mod download
+# Automatically tidy modules and download dependencies to prevent checksum errors
+RUN go mod tidy && go mod download
 
 # Copy source code
 COPY . .
@@ -45,4 +46,4 @@ EXPOSE 8080
 HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
     CMD wget --quiet --tries=1 --spider http://localhost:8080/ || exit 1
 
-CMD ["./blogging-cms"]
+CMD ["./blogging-cms"]