Skip to content

build: Cache during Docker build for speed #29

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
Peeja wants to merge 1 commit into
base: main
Choose a base branch
from
+8 −3
Open

build: Cache during Docker build for speed #29

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
11 changes: 8 additions & 3 deletions Dockerfile
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4,17 +4,22 @@ ARG TARGETARCH
ARG TARGETOS=linux
WORKDIR /go/src/sprue
COPY go.mod go.sum* ./
RUN go mod download || true
RUN --mount=type=cache,target=/go/pkg/mod \
go mod download || true
COPY . .

# Production build - stripped binary
FROM build AS build-prod
RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} \
RUN --mount=type=cache,target=/go/pkg/mod \
--mount=type=cache,target=/root/.cache/go-build \
Copy link
Copy Markdown
Member

@alanshaw alanshaw Apr 21, 2026

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Can you explain what's going on here? Is this caching twice? Why is that?

CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} \
go build -ldflags="-s -w" -o /sprue ./cmd/main.go

# Development build - debug-friendly binary
FROM build AS build-dev
RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} \
RUN --mount=type=cache,target=/go/pkg/mod \
--mount=type=cache,target=/root/.cache/go-build \
CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} \
go build -gcflags="all=-N -l" -o /sprue ./cmd/main.go
RUN GOARCH=${TARGETARCH} go install github.com/go-delve/delve/cmd/dlv@latest && \
cp /go/bin/linux_${TARGETARCH}/dlv /go/bin/dlv 2>/dev/null || cp /go/bin/dlv /go/bin/dlv 2>/dev/null || true
Expand Down
Loading