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Optimize Docker build with dependency layer caching (#36864)

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1. Copy dependency manifests before the full source copy so that
dependency installation gets its own cached layer. When only source code
changes, the dependency layers are reused.
2. Remove the `GOPROXY=direct` override which was bypassing the Go
module proxy, causing build failures when git servers are unreachable.
The Go default (`https://proxy.golang.org,direct`) is now used instead.

---------

Co-authored-by: Claude (Opus 4.6) <noreply@anthropic.com>
This commit is contained in:
silverwind
2026-03-08 16:58:21 +01:00
committed by GitHub
parent 6f8ab6aaaf
commit 23a5bc5e64
2 changed files with 12 additions and 10 deletions
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11
Dockerfile
View File

@@ -3,14 +3,14 @@
FROM --platform=$BUILDPLATFORM docker.io/library/golang:1.26-alpine3.23 AS frontend-build
RUN apk --no-cache add build-base git nodejs pnpm
WORKDIR /src
COPY package.json pnpm-lock.yaml .npmrc ./
RUN --mount=type=cache,target=/root/.local/share/pnpm/store pnpm install --frozen-lockfile
COPY --exclude=.git/ . .
RUN --mount=type=cache,target=/root/.local/share/pnpm/store make frontend
RUN make frontend
# Build backend for each target platform
FROM docker.io/library/golang:1.26-alpine3.23 AS build-env
ARG GOPROXY=direct
ARG GITEA_VERSION
ARG TAGS="sqlite sqlite_unlock_notify"
ENV TAGS="bindata timetzdata $TAGS"
@@ -22,14 +22,15 @@ RUN apk --no-cache add \
git
WORKDIR ${GOPATH}/src/code.gitea.io/gitea
COPY go.mod go.sum ./
RUN go mod download
# Use COPY instead of bind mount as read-only one breaks makefile state tracking and read-write one needs binary to be moved as it's discarded.
# ".git" directory is mounted separately later only for version data extraction.
COPY --exclude=.git/ . .
COPY --from=frontend-build /src/public/assets public/assets
# Build gitea, .git mount is required for version data
RUN --mount=type=cache,target=/go/pkg/mod \
--mount=type=cache,target="/root/.cache/go-build" \
RUN --mount=type=cache,target="/root/.cache/go-build" \
--mount=type=bind,source=".git/",target=".git/" \
make backend

11
Dockerfile.rootless
View File

@@ -3,14 +3,14 @@
FROM --platform=$BUILDPLATFORM docker.io/library/golang:1.26-alpine3.23 AS frontend-build
RUN apk --no-cache add build-base git nodejs pnpm
WORKDIR /src
COPY package.json pnpm-lock.yaml .npmrc ./
RUN --mount=type=cache,target=/root/.local/share/pnpm/store pnpm install --frozen-lockfile
COPY --exclude=.git/ . .
RUN --mount=type=cache,target=/root/.local/share/pnpm/store make frontend
RUN make frontend
# Build backend for each target platform
FROM docker.io/library/golang:1.26-alpine3.23 AS build-env
ARG GOPROXY=direct
ARG GITEA_VERSION
ARG TAGS="sqlite sqlite_unlock_notify"
ENV TAGS="bindata timetzdata $TAGS"
@@ -22,13 +22,14 @@ RUN apk --no-cache add \
git
WORKDIR ${GOPATH}/src/code.gitea.io/gitea
COPY go.mod go.sum ./
RUN go mod download
# See the comments in Dockerfile
COPY --exclude=.git/ . .
COPY --from=frontend-build /src/public/assets public/assets
# Build gitea, .git mount is required for version data
RUN --mount=type=cache,target=/go/pkg/mod \
--mount=type=cache,target="/root/.cache/go-build" \
RUN --mount=type=cache,target="/root/.cache/go-build" \
--mount=type=bind,source=".git/",target=".git/" \
make backend