chore: add imagemagick to docker prod image

Dockerfile

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+# Stage: build
+FROM golang:1.25.5-alpine AS build
+
+# Install build dependencies (CGO often needed for go-sqlite3)
+RUN apk add --no-cache gcc musl-dev
+
+WORKDIR /app
+
+# Download dependencies first
+COPY go.mod go.sum ./
+RUN go mod download
+
+# Copy source code and build
+COPY . .
+RUN CGO_ENABLED=1 GOOS=linux go build -trimpath -ldflags="-w -s" -o /app/neo .
+
+# Stage: prod
+FROM alpine:latest AS prod
+
+# Install required tools (webpmux via libwebp-tools, ffmpeg)
+RUN apk add --no-cache \
+    ffmpeg \
+    libwebp-tools \
+    imagemagick \
+    ca-certificates \
+    tzdata
+
+WORKDIR /app
+
+# Copy the binary from the build stage
+COPY --from=build /app/neo .
+
+# Command to run the application
+CMD ["./neo"]