Use minideb in dockerfile and unify go versions (#1)

.circleci/config.yml

@@ -2,7 +2,7 @@ version: 2
 jobs:
   build:
     docker:
-      - image: circleci/golang:1.9
+      - image: circleci/golang:1.10-stretch
 
     working_directory: /go/src/github.com/bitnami/render-template
     steps:

Dockerfile

@@ -2,7 +2,21 @@
 #
 # docker run --rm -i -e WHO=bitnami bitnami/render-template <<<"hello {{WHO}}"
 #
-FROM ryotakatsuki/godev as build
+FROM golang:1.10-stretch as build
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    git make upx \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN wget -q -O dep https://github.com/golang/dep/releases/download/v0.5.0/dep-linux-amd64 && \
+    echo '287b08291e14f1fae8ba44374b26a2b12eb941af3497ed0ca649253e21ba2f83 dep' | sha256sum -c - && \
+    mv dep /usr/bin/ && chmod +x /usr/bin/dep
+
+RUN go get -u \
+        github.com/golang/lint/golint \
+        golang.org/x/tools/cmd/goimports \
+        github.com/golang/dep/cmd/dep \
+        && rm -rf $GOPATH/src/* && rm -rf $GOPATH/pkg/*
 
 WORKDIR /go/src/app
 COPY . .
@@ -13,7 +27,7 @@ RUN make
 
 RUN upx --ultra-brute out/render-template
 
-FROM alpine:latest
+FROM bitnami/minideb:stretch
 
 COPY --from=build /go/src/app/out/render-template /usr/local/bin/