chore(docker): add dockerfile

add dockerfile

Signed-off-by: mritd <mritd@linux.com>

Dockerfile

@@ -0,0 +1,53 @@
+FROM golang:1.14.7-alpine3.12 AS builder
+
+LABEL maintainer="mritd <mritd@linux.com>"
+
+# The following parameters are used to set compilation information(such as compilation time,
+# commit id, etc.). Use "docker build --build-arg VERSION=1.1.1 ..." to set these parameters.
+# These parameters can be set automatically through CI Server.
+ARG VERSION="Unknown"
+ARG COMMIT="Unknown"
+ARG TIMESTAMP="Unknown"
+
+# GOPROXY is disabled by default, use:
+# docker build --build-arg GOPROXY="https://goproxy.io" ...
+# to enable GOPROXY.
+ARG GOPROXY=""
+
+ENV VERSION ${VERSION}
+ENV COMMIT ${COMMIT}
+ENV TIMESTAMP ${TIMESTAMP}
+ENV GOPROXY ${GOPROXY}
+
+# go mod is always enabled
+ENV GO111MODULE on
+
+COPY . /go/src/github.com/tobyxdd/hysteria
+
+WORKDIR /go/src/github.com/tobyxdd/hysteria/cmd
+
+# TODO: Is it necessary to remove "-w -s" to add debugging information?
+RUN set -ex \
+    && go build -o /go/bin/hysteria -ldflags \
+        "-w -s -X main.appVersion=${VERSION} \
+        -X main.appCommit=${COMMIT} \
+        -X main.appDate=${TIMESTAMP}"
+
+# multi-stage builds to create the final image
+FROM alpine:3.12 AS dist
+
+LABEL maintainer="mritd <mritd@linux.com>"
+
+# bash is used for debugging, tzdata is used to add timezone information.
+# Install ca-certificates to ensure no CA certificate errors.
+#
+# Do not try to add the "--no-cache" option when there are multiple "apk"
+# commands, this will cause the build process to become very slow.
+RUN set -ex \
+    && apk upgrade \
+    && apk add bash tzdata ca-certificates \
+    && rm -rf /var/cache/apk/*
+
+COPY --from=builder /go/bin/hysteria /usr/local/bin/hysteria
+
+ENTRYPOINT ["hysteria"]