Update Dockerfile

dvr/socat/Dockerfile

 FROM resin/rpi-raspbian
-
+# 更新系統套件清單
 RUN apt update
-
+# 安裝編譯用套件
 RUN apt install -y wget build-essential
-
+# 下載 socat 套件
 RUN wget http://www.dest-unreach.org/socat/download/socat-1.7.3.2.tar.gz
-
+# 解壓 socat 套件
 RUN tar zxf socat-1.7.3.2.tar.gz
-
-WORKDIR socat-1.7.3.2
-
-RUN ./configure
-
+# 設定編譯參數
+RUN /socat-1.7.3.2/configure
+# 編譯 socat
 RUN make
-
+# 安裝 socat
 RUN make install
-
-ENV TZ=Asia/Taipei
-
+# 執行 socat
 CMD socat tcp-listen:${LOCAL_PORT},reuseaddr,fork tcp:${REMOTE_IP}:${REMOTE_PORT}
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