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Dockerfile

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+# Build stage
+FROM golang:1.25.7-alpine AS builder
+
+WORKDIR /app
+
+# Build-time args (passed from docker-compose build)
+ARG DB_URL
+ARG REDIS_URL
+ARG REDIS_HOST
+ARG REDIS_PORT
+ARG EMAIL_HOST
+ARG EMAIL_PORT
+
+# Install build dependencies
+RUN apk add --no-cache git
+
+# Copy go mod and sum files
+COPY go.mod go.sum ./
+
+# Download all dependencies
+RUN go mod download
+
+# Copy the source code
+COPY . .
+
+# Build the application
+RUN CGO_ENABLED=0 GOOS=linux go build -o main .
+
+# Final stage
+FROM alpine:latest
+
+WORKDIR /app
+
+# Install necessary runtime dependencies
+RUN apk add --no-cache ca-certificates tzdata
+
+# Set runtime ENV from build args (1:1 usage)
+ENV DB_URL=${DB_URL}
+ENV REDIS_URL=${REDIS_URL}
+ENV REDIS_HOST=${REDIS_HOST}
+ENV REDIS_PORT=${REDIS_PORT}
+ENV EMAIL_HOST=${EMAIL_HOST}
+ENV EMAIL_PORT=${EMAIL_PORT}
+
+# Copy the binary from builder
+COPY --from=builder /app/main .
+
+
+
+# Copy docs and views for static serving if not mounted
+COPY docs ./docs
+COPY views ./views
+
+# Create uploads directory
+RUN mkdir -p uploads
+
+# Expose the port
+EXPOSE 8080
+
+# Command to run the executable
+CMD ["./main"]