ci: use golang bci instead of manual download

Signed-off-by: davidko <dko@suse.com>

Dockerfile.dapper

@@ -1,47 +1,40 @@
-FROM registry.suse.com/bci/bci-base:15.6
+FROM registry.suse.com/bci/golang:1.22
 
-ARG DAPPER_HOST_ARCH=amd64
+ARG DAPPER_HOST_ARCH
 ARG http_proxy
 ARG https_proxy
-ENV HOST_ARCH=${DAPPER_HOST_ARCH} ARCH=${DAPPER_HOST_ARCH}
 
-# Setup environment
+ENV HOST_ARCH=${DAPPER_HOST_ARCH} ARCH=${DAPPER_HOST_ARCH}
 ENV PATH /go/bin:$PATH
 ENV DAPPER_DOCKER_SOCKET true
 ENV DAPPER_ENV TAG REPO DRONE_REPO DRONE_PULL_REQUEST DRONE_COMMIT_REF
 ENV DAPPER_OUTPUT bin coverage.out
 ENV DAPPER_SOURCE /go/src/github.com/longhorn/backing-image-manager
-WORKDIR ${DAPPER_SOURCE}
 
+WORKDIR ${DAPPER_SOURCE}
+ENTRYPOINT ["./scripts/entry"]
+CMD ["ci"]
 
 RUN zypper -n addrepo --refresh https://download.opensuse.org/repositories/system:/snappy/SLE_15/system:snappy.repo && \
-    zypper --gpg-auto-import-keys ref
+    zypper --gpg-auto-import-keys ref && \
+    zypper -n ref && \
+    zypper update -y
 
 # Install packages
 RUN zypper -n install cmake wget curl git less file \
     libkmod-devel libnl3-devel linux-glibc-devel pkg-config psmisc python3-tox fuse python3-devel qemu-tools \
     bash-completion librdmacm1 librdmacm-utils libibverbs xsltproc docbook-xsl-stylesheets \
     perl-Config-General libaio-devel glibc-devel-static glibc-devel iptables libltdl7 libdevmapper1_03 iproute2 jq docker gcc
 
-# needed for ${!var} substitution
+# FIXME: Needed for ${!var} substitution
 RUN rm -f /bin/sh && ln -s /bin/bash /bin/sh
 
-RUN if [ ${ARCH} == "s390x" ]; then \
-    ln -s /usr/bin/gcc /usr/bin/s390x-linux-gnu-gcc;\
-    fi
+# Install tools
 
-# Install Go & tools
-ENV GOLANG_ARCH_amd64=amd64 GOLANG_ARCH_arm64=arm64 GOLANG_ARCH_s390x=s390x GOLANG_ARCH=GOLANG_ARCH_${ARCH} \
-    GOPATH=/go PATH=/go/bin:/usr/local/go/bin:${PATH} SHELL=/bin/bash
-RUN wget -O - https://storage.googleapis.com/golang/go1.21.3.linux-${!GOLANG_ARCH}.tar.gz | tar -xzf - -C /usr/local
+## golangci-lint
 RUN curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.55.2
 
-# The docker version in dapper is too old to have buildx. Install it manually.
+## Docker Buildx: The docker version in dapper is too old to have buildx. Install it manually.
 RUN wget https://github.com/docker/buildx/releases/download/v0.13.1/buildx-v0.13.1.linux-${ARCH} && \
     chmod +x buildx-v0.13.1.linux-${ARCH} && \
     mv buildx-v0.13.1.linux-${ARCH} /usr/local/bin/buildx
-
-VOLUME /tmp
-ENV TMPDIR /tmp
-ENTRYPOINT ["./scripts/entry"]
-CMD ["ci"]