fix(docker): restore make docker-build by adding build directives and fixing Go version (#2700)

* fix(docker): restore `make docker-build` by adding build directives and fixing Go version

docker-compose.yml only had `image:` references with no `build:` sections,
so `docker compose build` had nothing to build. Also fixed golang:1.26.0-alpine
(nonexistent) to golang:1.25-alpine in Dockerfile.full/heavy, and removed
LICENSE from .dockerignore since scripts/copydir.go needs it as a repo-root anchor
during `go generate`.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix(docker): inject version metadata ldflags in Dockerfile.launcher

Mirror the ldflags from web/Makefile (Version, GitCommit, BuildTime,
GoVersion) into the picoclaw-launcher go build command so Docker-built
launcher images include proper version/build metadata.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

.dockerignore

@@ -1,3 +1,5 @@
+# Do NOT exclude LICENSE or .github — scripts/copydir.go uses them as repo-root anchors
+# during `go generate`, which runs inside `make build` in the Dockerfile.
 .git
 .gitignore
 build/
@@ -6,5 +8,4 @@ config/
 .env
 .env.example
 *.md
-LICENSE
 assets/

docker/Dockerfile.full

@@ -1,7 +1,7 @@
 # ============================================================
 # Stage 1: Build the picoclaw binary
 # ============================================================
-FROM golang:1.26.0-alpine AS builder
+FROM golang:1.25-alpine AS builder
 
 RUN apk add --no-cache git make
 

docker/Dockerfile.heavy

@@ -1,7 +1,7 @@
 # ============================================================
 # Stage 1: Build the picoclaw binary
 # ============================================================
-FROM golang:1.26.0-alpine AS builder
+FROM golang:1.25-alpine AS builder
 
 RUN apk add --no-cache git make
 

docker/Dockerfile.launcher

@@ -0,0 +1,65 @@
+# ============================================================
+# Stage 1: Build frontend assets (Node.js + pnpm)
+# ============================================================
+FROM node:24-alpine3.23 AS frontend
+
+RUN corepack enable && corepack prepare pnpm@latest --activate
+
+WORKDIR /src/web/frontend
+
+# Cache frontend dependencies
+COPY web/frontend/package.json web/frontend/pnpm-lock.yaml ./
+RUN CI=true pnpm install --frozen-lockfile
+
+# Build frontend
+COPY web/frontend/ ./
+RUN pnpm build:backend
+
+# ============================================================
+# Stage 2: Build Go binaries (picoclaw + picoclaw-launcher)
+# ============================================================
+FROM golang:1.25-alpine AS builder
+
+RUN apk add --no-cache git make
+
+WORKDIR /src
+
+# Cache Go dependencies
+COPY go.mod go.sum ./
+RUN go mod download
+
+# Copy source
+COPY . .
+
+# Copy pre-built frontend assets into the backend embed directory
+COPY --from=frontend /src/web/backend/dist web/backend/dist
+
+# Build picoclaw binary (includes go generate)
+RUN make build
+
+# Build picoclaw-launcher binary (frontend already built in stage 1)
+# Mirror ldflags from web/Makefile to inject version metadata
+RUN CONFIG_PKG=github.com/sipeed/picoclaw/pkg/config && \
+    VERSION=$(git describe --tags --always --dirty 2>/dev/null || echo dev) && \
+    GIT_COMMIT=$(git rev-parse --short=8 HEAD 2>/dev/null || echo dev) && \
+    BUILD_TIME=$(date +%FT%T%z) && \
+    GO_VERSION=$(go env GOVERSION) && \
+    CGO_ENABLED=0 go build -v -tags goolm,stdjson \
+      -ldflags "-X ${CONFIG_PKG}.Version=${VERSION} -X ${CONFIG_PKG}.GitCommit=${GIT_COMMIT} -X ${CONFIG_PKG}.BuildTime=${BUILD_TIME} -X ${CONFIG_PKG}.GoVersion=${GO_VERSION} -s -w" \
+      -o build/picoclaw-launcher ./web/backend/
+
+# ============================================================
+# Stage 3: Minimal runtime image
+# ============================================================
+FROM alpine:3.23
+
+RUN apk add --no-cache ca-certificates tzdata curl
+
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+  CMD wget -q --spider http://localhost:18790/health || exit 1
+
+COPY --from=builder /src/build/picoclaw /usr/local/bin/picoclaw
+COPY --from=builder /src/build/picoclaw-launcher /usr/local/bin/picoclaw-launcher
+
+ENTRYPOINT ["picoclaw-launcher"]
+CMD ["-console", "-public", "-no-browser"]

docker/docker-compose.yml

@@ -4,6 +4,9 @@ services:
   #   docker compose -f docker/docker-compose.yml run --rm picoclaw-agent -m "Hello"
   # ─────────────────────────────────────────────
   picoclaw-agent:
+    build:
+      context: ..
+      dockerfile: docker/Dockerfile
     image: docker.io/sipeed/picoclaw:latest
     container_name: picoclaw-agent
     profiles:
@@ -22,6 +25,9 @@ services:
   #   docker compose -f docker/docker-compose.yml --profile gateway up
   # ─────────────────────────────────────────────
   picoclaw-gateway:
+    build:
+      context: ..
+      dockerfile: docker/Dockerfile
     image: docker.io/sipeed/picoclaw:latest
     container_name: picoclaw-gateway
     restart: unless-stopped
@@ -38,6 +44,9 @@ services:
   #   docker compose -f docker/docker-compose.yml --profile launcher up
   # ─────────────────────────────────────────────
   picoclaw-launcher:
+    build:
+      context: ..
+      dockerfile: docker/Dockerfile.launcher
     image: docker.io/sipeed/picoclaw:launcher
     container_name: picoclaw-launcher
     restart: unless-stopped