dockerfile: make go dependency caching effective

Signed-off-by: Michal Minář <[email protected]>
ondat · Jun 27, 2022 · 8ed2fd3 · 8ed2fd3
1 parent 35929b3
commit 8ed2fd3
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diff --git a/.dockerignore b/.dockerignore
@@ -6,3 +6,5 @@
 !go.mod
 !go.sum
 !index.html
+# ignore local GOPATH=$(pwd)/.go/
+.go/
diff --git a/Dockerfile b/Dockerfile
@@ -2,11 +2,12 @@
 FROM golang:1.17.3 as builder
 
 WORKDIR /workspace
-COPY . .
+COPY go.mod go.sum ./
 
 # cache deps before building and copying source so that we don't need to re-download as much
 # and so that source changes don't invalidate our downloaded layer
 RUN go mod download
+COPY . .
 
 # Build
 RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -o metrics-exporter .
-Original file line number
+Diff line change
@@ Expand Up / @@ -6,3 +6,5 @@ @@
     !go.mod
     !go.sum
     !index.html
+    # ignore local GOPATH=$(pwd)/.go/
+    .go/