new payment methods service

ci/dev/payments-methods.dockerfile

@@ -0,0 +1,40 @@
+# Development Dockerfile for Payments Methods Service with Air hot reload
+
+FROM golang:alpine AS builder
+
+RUN apk add --no-cache bash git build-base protoc protobuf-dev && \
+    go install google.golang.org/protobuf/cmd/protoc-gen-go@latest && \
+    go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest && \
+    go install github.com/air-verse/air@latest
+
+WORKDIR /src
+
+COPY api/proto ./api/proto
+COPY api/pkg ./api/pkg
+COPY ci/scripts/proto/generate.sh ./ci/scripts/proto/
+RUN bash ci/scripts/proto/generate.sh
+
+# Copy service dependencies (needed for go.mod replace directives)
+COPY api/payments/storage ./api/payments/storage
+
+# Runtime stage for development with Air
+FROM golang:alpine
+
+RUN apk add --no-cache bash git build-base && \
+    go install github.com/air-verse/air@latest
+
+WORKDIR /src
+
+# Copy generated proto and pkg from builder
+COPY --from=builder /src/api/proto ./api/proto
+COPY --from=builder /src/api/pkg ./api/pkg
+
+# Copy service dependencies
+COPY --from=builder /src/api/payments/storage ./api/payments/storage
+
+# Source code will be mounted at runtime
+WORKDIR /src/api/payments/methods
+
+EXPOSE 50066 9416
+
+CMD ["air", "-c", ".air.toml", "--", "-config.file", "/app/config.yml", "-debug"]