Create Dockerfile

Dockerfile

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+FROM alpine:3.8
+MAINTAINER Stille <stille@ioiox.com>
+
+ENV VERSION v0.2.6
+
+WORKDIR /base
+RUN apk add wget && \
+    wget -P /base https://github.com/tindy2013/subconverter/releases/download/${VERSION}/subconverter_linux64.tar.gz && \
+    tar xzf subconverter_linux64.tar.gz && \
+    rm -rf subconverter_linux64.tar.gz && \
+    apk del wget
+COPY pref.ini /base
+
+EXPOSE 25500
+
+CMD /base/subconverter