build: fix dockerfile

Signed-off-by: Henry Gressmann <[email protected]>

Author: explodingcamera

Dockerfile

@@ -5,12 +5,13 @@ ARG TAR_URL_ARM64
 RUN apt-get update && apt-get install -y curl tar
 RUN TAR_URL=$(if [ "${TARGETPLATFORM}" = "linux/arm64" ]; then echo ${TAR_URL_ARM64}; else echo ${TAR_URL_AMD64}; fi) \
     && curl -fsSL $TAR_URL -o /tmp/package.tar.gz \
+    && mkdir -p /app \
     && tar -xzf /tmp/package.tar.gz -C /app \
     && chmod +x /app/liwan
 
 FROM scratch
 
-ENV LIWAN_CONFIG=/app/liwan.config.toml
+ENV LIWAN_CONFIG=/liwan.config.toml
 ENV LIWAN_DATA_DIR=/data
 
 COPY --from=downloader /app/liwan /liwan