Initial commit

.env

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+LISTEN=:80

Dockerfile

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+FROM golang:1.11-rc-alpine as build
+
+RUN apk add --no-cache git=2.18.1-r0
+
+WORKDIR /src
+COPY go.mod go.sum .env *.go ./
+RUN go get -d -v ./...
+RUN CGO_ENABLED=0 go build -ldflags "-s -w"
+
+FROM scratch
+
+COPY --from=build /src/pictures /pictures
+COPY --from=build /src/.env /.env
+
+ENTRYPOINT ["/pictures"]

go.mod

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+module pictures
+
+go 1.12
+
+require (
+	github.com/joho/godotenv v1.3.0
+	github.com/julienschmidt/httprouter v1.2.0
+)

go.sum

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+github.com/joho/godotenv v1.3.0 h1:Zjp+RcGpHhGlrMbJzXTrZZPrWj+1vfm90La1wgB6Bhc=
+github.com/joho/godotenv v1.3.0/go.mod h1:7hK45KPybAkOC6peb+G5yklZfMxEjkZhHbwpqxOKXbg=
+github.com/julienschmidt/httprouter v1.2.0 h1:TDTW5Yz1mjftljbcKqRcrYhd4XeOoI98t+9HbQbYf7g=
+github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=

main.go

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+package main
+
+import (
+  "encoding/json"
+  "log"
+  "net/http"
+  "os"
+
+  "github.com/joho/godotenv"
+  "github.com/julienschmidt/httprouter"
+)
+
+var listen string
+
+func main() {
+  // Load .env
+  err := godotenv.Load()
+  if err != nil {
+    log.Fatal("Error loading .env file")
+  }
+  listen = os.Getenv("LISTEN")
+
+  // Routes
+  router := httprouter.New()
+
+  // Start server
+  log.Printf("starting server on %s", listen)
+  log.Fatal(http.ListenAndServe(listen, router))
+}