fix: switch docker image to alpine to avoid certificate errors

Author: stackdumper

Dockerfile

@@ -16,8 +16,14 @@ RUN go test -v ./...
 RUN go build -ldflags="-w -s" -o build
 
 # === RUN STAGE === #
-FROM scratch as run
-
+FROM alpine as run
+
+RUN apk update \
+        && apk upgrade \
+        && apk add --no-cache ca-certificates \
+        && update-ca-certificates \
+        && rm -rf /var/cache/apk/*
+        
 WORKDIR /srv/app
 COPY --from=build /srv/app/build /srv/app/build
 

go.sum

@@ -56,6 +56,7 @@ golang.org/x/sys v0.0.0-20181228144115-9a3f9b0469bb/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190403152447-81d4e9dc473e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190419153524-e8e3143a4f4a h1:XCr/YX7O0uxRkLq2k1ApNQMims9eCioF9UpzIPBDmuo=
 golang.org/x/sys v0.0.0-20190419153524-e8e3143a4f4a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=