Create containers

Author: sandboxws

.gitignore

@@ -395,6 +395,7 @@ dashboard/.env.staging
 
 ### Go ###
 bin/
+server/dashboard/
 *.exe
 *.exe~
 *.dll

server/Dockerfile

@@ -1,11 +1,31 @@
-FROM golang:1.24-alpine AS build
+FROM golang:1.26-alpine AS build
 
 WORKDIR /src
 
-COPY go.mod go.sum ./
+# Copy module manifests for dependency caching.
+# The server module is the main build context; instruments comes from a named
+# build context (--build-context instruments=<path>).
+COPY go.mod go.sum ./server/
+COPY --from=instruments go.mod go.sum ./instruments/
+
+# Create a workspace file matching the Docker filesystem layout.
+# The repo go.work uses ../flink-reactor-instruments/server — this adapts
+# those paths for the flat /src/{server,instruments} layout inside the image.
+RUN printf 'go 1.26.0\n\nuse ./server\nuse ./instruments\n' > go.work
+
+# Download external dependencies (layer is cached unless go.mod/go.sum change).
+WORKDIR /src/server
+RUN go mod download
+WORKDIR /src/instruments
 RUN go mod download
 
-COPY . .
+# Copy full source for both modules.
+WORKDIR /src
+COPY . ./server/
+COPY --from=instruments . ./instruments/
+
+# Build the server binary.
+WORKDIR /src/server
 RUN CGO_ENABLED=0 go build -o /usr/local/bin/reactor-server ./cmd/reactor-server/
 
 FROM alpine:3.21
@@ -14,8 +34,7 @@ RUN adduser -D -u 1000 reactor
 
 COPY --from=build /usr/local/bin/reactor-server /usr/local/bin/reactor-server
 
-# Copy dashboard static export if available (built externally).
-# The STATIC_DIR env var tells reactor-server where to find SPA files.
+# Copy dashboard static export (built by the just docker recipe).
 COPY --chown=reactor:reactor dashboard/ /app/dashboard/
 ENV STATIC_DIR=/app/dashboard
 

server/justfile

@@ -20,9 +20,23 @@ generate:
 dev:
     go run ./cmd/reactor-server/
 
-# Build Docker image
+# Build Docker image (builds dashboard, copies static assets, then builds image)
 docker:
-    docker build -t reactor-server .
+    cd .. && pnpm build
+    mkdir -p dashboard
+    rsync -a --delete ../dashboard/dist/ dashboard/
+    docker build \
+        --build-context instruments=../../flink-reactor-instruments/server \
+        -t reactor-server .
+
+# Build Docker image inside minikube's Docker daemon
+docker-minikube:
+    cd .. && pnpm build
+    mkdir -p dashboard
+    rsync -a --delete ../dashboard/dist/ dashboard/
+    eval $(minikube docker-env) && docker build \
+        --build-context instruments=../../flink-reactor-instruments/server \
+        -t reactor-server .
 
 # Run tests with coverage
 coverage: