Merge pull request #49 from seatgeek/use-go-mod

Upgrade to Go 1.13.7 and use go mod

.gitignore

@@ -1,4 +1,12 @@
-vendor/
-!vendor/vendor.json
-conf.d/
+# Files
+.gitignore
+ci.sh
+LICENSE
+Makefile
+README.md
+
+# Folders
+.git/
 build/
+conf.d/
+examples/

.travis.yml

@@ -3,7 +3,7 @@ sudo: required
 language: go
 
 go:
-  - "1.11"
+  - "1.13.7"
 
 services:
   - docker
@@ -14,6 +14,7 @@ cache:
 
 env:
   global:
+    - DOCKER_BUILDKIT=1
     - CGO_ENABLED=0
     - GOBUILD="linux-amd64 windows-amd64 darwin-amd64"
     # DOCKER_USER

Dockerfile

@@ -1,10 +1,33 @@
-FROM ubuntu:trusty
+#
+# Build Go binaries
+#
+FROM golang:1.13.7 as builder
 
-RUN apt-get update \
-    && apt-get install -y ssl-cert ca-certificates \
-    && apt-get clean \
-    && rm -rf /var/lib/apt/lists/*
+# Define the build path
+WORKDIR /root/go/src/github.com/seatgeek/hashi-helper
 
-COPY build/hashi-helper-linux-amd64 /hashi-helper
+# Disable CGO
+ENV CGO_ENABLED=0
 
+# Copy go mod and sum files
+COPY go.mod go.sum ./
+
+# Download all dependencies. Dependencies will be cached if the go.mod and go.sum files are not changed
+RUN go mod download
+
+# Copy the source from the current directory to the Working Directory inside the container
+COPY . .
+
+# Build the Go app
+RUN go build -o /bin/hashi-helper
+
+#
+# Runtime container
+#
+FROM ubuntu:bionic
+
+# Copy the binary from builder
+COPY --from=builder /bin/hashi-helper /hashi-helper
+
+# Configure entrypoint
 ENTRYPOINT ["/hashi-helper"]