chore(docker): add dockerfile (#549)

* chore(docker): add dockerfile

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

* chore(docker): fix docker file

fix docker file
Signed-off-by: Nmritd <mritd@linux.com>

* chore(docker): mv bin file to /cloudreve

mv bin file to /cloudreve
Signed-off-by: Nmritd <mritd@linux.com>

* chore(docker): remove GOPROXY

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

Dockerfile

+# build frontend
+FROM node:lts-alpine3.12 AS fe-builder
+
+COPY ./assets /assets
+
+WORKDIR /assets
+
+RUN set -ex \
+    && apk upgrade \
+    && yarn install \
+    && yarn run build
+
+# build backend
+FROM golang:1.15.0-alpine3.12 AS be-builder
+
+ENV GO111MODULE on
+
+COPY . /go/src/github.com/HFO4/cloudreve
+COPY --from=fe-builder /assets/build/ /go/src/github.com/HFO4/cloudreve/assets/build/
+
+WORKDIR /go/src/github.com/HFO4/cloudreve
+
+RUN set -ex \
+    && apk upgrade \
+    && apk add gcc libc-dev git \
+    && export COMMIT_SHA=$(git rev-parse --short HEAD) \
+    && export VERSION=$(git describe --tags) \
+    && (cd && go get github.com/rakyll/statik) \
+    && statik -src=assets/build/ -include=*.html,*.js,*.json,*.css,*.png,*.svg,*.ico -f \
+    && go install -ldflags "-X 'github.com/HFO4/cloudreve/pkg/conf.BackendVersion=${VERSION}' \
+                            -X 'github.com/HFO4/cloudreve/pkg/conf.LastCommit=${COMMIT_SHA}'\
+                            -w -s"
+
+# build final image
+FROM alpine:3.12 AS dist
+
+LABEL maintainer="mritd <mritd@linux.com>"
+
+COPY --from=be-builder /go/bin/cloudreve /cloudreve/cloudreve
+
+RUN apk upgrade \
+    && apk add bash tzdata \
+    && ln -s /cloudreve/cloudreve /usr/bin/cloudreve \
+    && rm -rf /var/cache/apk/*
+
+ENTRYPOINT ["cloudreve"]