Update Dockerfile

Dockerfile

@@ -14,16 +14,16 @@ LABEL COMMIT_SHA=${COMMIT_SHA}
 COPY entrypoint.sh /entrypoint.sh
 COPY ./healthcheck /healthcheck
 
-# install dependencies
+# Install dependencies
 RUN case ${TARGETPLATFORM} in \
-      "linux/amd64")   export ARCH="amd64" ;; \
-      "linux/arm64")   export ARCH="armv8" ;; \
+      "linux/amd64") export ARCH="amd64" ;; \
+      "linux/arm64") export ARCH="armv8" ;; \
       *) echo "Unsupported TARGETPLATFORM: ${TARGETPLATFORM}" && exit 1 ;; \
     esac && \
-    echo "Building for ${ARCH} with GOST ${GOST_VERSION}" &&\
+    echo "Building for ${ARCH} with GOST ${GOST_VERSION}" && \
     apt-get update && \
     apt-get upgrade -y && \
-    apt-get install -y curl gnupg lsb-release sudo jq ipcalc && \
+    apt-get install -y curl gnupg lsb-release sudo jq ipcalc file && \
     curl https://pkg.cloudflareclient.com/pubkey.gpg | gpg --yes --dearmor --output /usr/share/keyrings/cloudflare-warp-archive-keyring.gpg && \
     echo "deb [signed-by=/usr/share/keyrings/cloudflare-warp-archive-keyring.gpg] https://pkg.cloudflareclient.com/ $(lsb_release -cs) main" | tee /etc/apt/sources.list.d/cloudflare-client.list && \
     apt-get update && \