Refactor Dockerfile to use cache for go modules and package installation

Author: andrasbacsai

Dockerfile

@@ -2,26 +2,22 @@ FROM golang:1.23-bullseye AS deps
 
 WORKDIR /app
 COPY go.mod go.sum ./
-RUN --mount=type=cache,target=/go/pkg/mod \
-    go mod download
+RUN go mod download
 
 FROM golang:1.23-bullseye AS build
 
 WORKDIR /app
 COPY --from=deps /go/pkg/mod /go/pkg/mod
 COPY . .
-RUN --mount=type=cache,target=/var/cache/apt \
-    apt-get update && apt-get install -y gcc g++
+RUN apt-get update && apt-get install -y gcc g++
 ENV CGO_ENABLED=1 \
     GOOS=linux \
     GOARCH=amd64
 
-RUN --mount=type=cache,target=/root/.cache/go-build \
-    go build -o /app/bin/sentinel ./
+RUN go build -o /app/bin/sentinel ./
 
 FROM debian:bullseye-slim
-RUN --mount=type=cache,target=/var/cache/apt \
-    apt-get update && apt-get install -y ca-certificates curl && rm -rf /var/lib/apt/lists/*
+RUN apt-get update && apt-get install -y ca-certificates curl && rm -rf /var/lib/apt/lists/*
 ENV GIN_MODE=release
 COPY --from=build /app/ /app
 COPY --from=build /app/bin/sentinel /app/sentinel

Dockerfile.arm64

@@ -2,26 +2,22 @@ FROM golang:1.23-bullseye AS deps
 
 WORKDIR /app
 COPY go.mod go.sum ./
-RUN --mount=type=cache,target=/go/pkg/mod \
-    go mod download
+RUN go mod download
 
 FROM golang:1.23-bullseye AS build
 
 WORKDIR /app
 COPY --from=deps /go/pkg/mod /go/pkg/mod
 COPY . .
-RUN --mount=type=cache,target=/var/cache/apt \
-    apt-get update && apt-get install -y gcc g++
+RUN apt-get update && apt-get install -y gcc g++
 ENV CGO_ENABLED=1 \
     GOOS=linux \
     GOARCH=arm64
 
-RUN --mount=type=cache,target=/root/.cache/go-build \
-    go build -o /app/bin/sentinel ./
+RUN go build -o /app/bin/sentinel ./
 
 FROM debian:bullseye-slim
-RUN --mount=type=cache,target=/var/cache/apt \
-    apt-get update && apt-get install -y ca-certificates curl && rm -rf /var/lib/apt/lists/*
+RUN apt-get update && apt-get install -y ca-certificates curl && rm -rf /var/lib/apt/lists/*
 ENV GIN_MODE=release
 COPY --from=build /app/ /app
 COPY --from=build /app/bin/sentinel /app/sentinel