Merge pull request #30 from Financial-Times/fix/UPPSF-666-update-dock…

…er-image

UPPSF-666-update-docker-image

.circleci/config.yml

@@ -3,7 +3,7 @@ jobs:
   build:
     working_directory: /go/src/github.com/Financial-Times/content-preview
     docker:
-      - image: golang:1.8.3
+      - image: golang:1
         environment:
           GOPATH: /go
           CIRCLE_TEST_REPORTS: /tmp/test-results

Dockerfile

@@ -1,31 +1,30 @@
-FROM golang:1.8.3-alpine
+FROM golang:1
 
 ENV PROJECT=content-preview
-COPY . /${PROJECT}-sources/
+ENV ORG_PATH="github.com/Financial-Times"
+ENV SRC_FOLDER="${GOPATH}/src/${ORG_PATH}/${PROJECT}"
+ENV BUILDINFO_PACKAGE="${ORG_PATH}/${PROJECT}/vendor/${ORG_PATH}/service-status-go/buildinfo."
 
-RUN apk --no-cache --virtual .build-dependencies add git \
-  && ORG_PATH="github.com/Financial-Times" \
-  && REPO_PATH="${ORG_PATH}/${PROJECT}" \
-  && mkdir -p $GOPATH/src/${ORG_PATH} \
-  # Linking the project sources in the GOPATH folder
-  && ln -s /${PROJECT}-sources $GOPATH/src/${REPO_PATH} \
-  && cd $GOPATH/src/${REPO_PATH} \
-  && BUILDINFO_PACKAGE="${ORG_PATH}/${PROJECT}/vendor/${ORG_PATH}/service-status-go/buildinfo." \
-  && VERSION="version=$(git describe --tag --always 2> /dev/null)" \
+COPY . ${SRC_FOLDER}
+WORKDIR ${SRC_FOLDER}
+
+# Install dependancies
+RUN go get -u github.com/kardianos/govendor \
+  && $GOPATH/bin/govendor sync
+
+RUN VERSION="version=$(git describe --tag --always 2> /dev/null)" \
   && DATETIME="dateTime=$(date -u +%Y%m%d%H%M%S)" \
   && REPOSITORY="repository=$(git config --get remote.origin.url)" \
   && REVISION="revision=$(git rev-parse HEAD)" \
   && BUILDER="builder=$(go version)" \
-  && LDFLAGS="-X '"${BUILDINFO_PACKAGE}$VERSION"' -X '"${BUILDINFO_PACKAGE}$DATETIME"' -X '"${BUILDINFO_PACKAGE}$REPOSITORY"' -X '"${BUILDINFO_PACKAGE}$REVISION"' -X '"${BUILDINFO_PACKAGE}$BUILDER"'" \
-  && echo "Build flags: $LDFLAGS" \
-  && echo "Fetching dependencies..." \
-  && go get -u github.com/kardianos/govendor \
-  && $GOPATH/bin/govendor sync \
-  && go build -ldflags="${LDFLAGS}" \
-  && mv ${PROJECT} /${PROJECT} \
-  && apk del .build-dependencies \
-  && rm -rf $GOPATH /var/cache/apk/*
+  && LDFLAGS="-s -w -X '"${BUILDINFO_PACKAGE}$VERSION"' -X '"${BUILDINFO_PACKAGE}$DATETIME"' -X '"${BUILDINFO_PACKAGE}$REPOSITORY"' -X '"${BUILDINFO_PACKAGE}$REVISION"' -X '"${BUILDINFO_PACKAGE}$BUILDER"'" \
+  && CGO_ENABLED=0 go build -a -o /artifacts/${PROJECT} -ldflags="${LDFLAGS}" \
+  && echo "Build flags: ${LDFLAGS}"  
 
+# Multi-stage build - copy certs and the binary into the image
+FROM scratch
 WORKDIR /
+COPY --from=0 /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+COPY --from=0 /artifacts/* /
 
 CMD [ "/content-preview" ]