fix: change to static base container (#791)
fix: change to static base container (#791)

In addition, this commits ensures we compile a static binary by
disabling CGO.

Fix #762.
# Copyright 2019 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Use the latest stable golang 1.x to compile to a binary
FROM golang:1 as build

WORKDIR /go/src/cloudsql-proxy
COPY . .

RUN go get ./...
RUN go build -ldflags "-X main.metadataString=container" -o cloud_sql_proxy ./cmd/cloud_sql_proxy

# Final Stage
FROM gcr.io/distroless/base-debian10:nonroot
COPY --from=build --chown=nonroot /go/src/cloudsql-proxy/cloud_sql_proxy /cloud_sql_proxy
# set the uid as an integer for compatibility with runAsNonRoot in Kubernetes
USER 65532

# Copyright 2019 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Use the latest stable golang 1.x to compile to a binary
FROM golang:1 as build

WORKDIR /go/src/cloudsql-proxy
COPY . .

RUN go get ./...
RUN CGO_ENABLED=0 go build -ldflags "-X main.metadataString=container" -o cloud_sql_proxy ./cmd/cloud_sql_proxy

# Final Stage
FROM gcr.io/distroless/static:nonroot
COPY --from=build --chown=nonroot /go/src/cloudsql-proxy/cloud_sql_proxy /cloud_sql_proxy
# set the uid as an integer for compatibility with runAsNonRoot in Kubernetes
USER 65532
