Simplify Docker image

Author: clareliguori

.dockerignore

@@ -2,11 +2,9 @@
 bin
 output
 img2lambda
-vendor
 AUTHORS.md
 CONTRIBUTING.md
 LICENSE
 NOTICE
 README.md
 Dockerfile
-Makefile

Dockerfile

@@ -1,19 +1,12 @@
 FROM golang:1.11 AS builder
 
-# Install dep
 RUN curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
 
-WORKDIR $GOPATH/src/github.com/awslabs/img2lambda
+WORKDIR /go/src/github.com/awslabs/img2lambda
 
-# Ensure deps, optimized for build caching
-COPY Gopkg.toml Gopkg.lock ./
-RUN dep ensure --vendor-only
-
-# Copy and build the code
 COPY . ./
-RUN go build -o /bin/img2lambda -tags="containers_image_ostree_stub exclude_graphdriver_devicemapper exclude_graphdriver_overlay exclude_graphdriver_btrfs containers_image_openpgp" .
+RUN make
 
 FROM busybox:glibc
-COPY --from=builder /bin/img2lambda /bin/img2lambda
-RUN /bin/img2lambda --help
+COPY --from=builder /go/src/github.com/awslabs/img2lambda/bin/local/img2lambda /bin/img2lambda
 CMD [ "/bin/img2lambda" ]