docker support

Dockerfile

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+FROM alpine as go_build
+RUN apk update
+RUN apk upgrade
+RUN apk add --update git go gcc g++
+
+WORKDIR /go/src/github.com/simon987/ws_bucket/
+ENV GOPATH /go
+
+COPY api api
+COPY *.go .
+RUN go get . && CGO_ENABLED=1 GOOS=linux go build -a -o ws_bucket .
+
+FROM alpine
+WORKDIR /root
+
+COPY --from=go_build ["/go/src/github.com/simon987/ws_bucket/ws_bucket", "./"]
+
+ENV WS_BUCKET_DIALECT=sqlite3
+ENV WS_BUCKET_CONNSTR=wsb.db
+ENV WS_BUCKET_WORKDIR=/data
+ENV WS_BUCKET_LOGLEVEL=info
+
+VOLUME ["/data"]
+
+CMD ["/root/ws_bucket"]
+