Update Dockerfile to latest standards

Author: mhutchinson

examples/deployment/kubernetes/mysql/image/Dockerfile

@@ -17,16 +17,16 @@ FROM ubuntu:jammy@sha256:4e0171b9275e12d375863f2b3ae9ce00a4c53ddda176bd55868df97
 
 # Patch the OS-level packages and remove unneeded dependencies.
 RUN apt-get update \
-    && apt-get -y upgrade \
-    && apt-get -y autoremove \
-    && rm -rf /var/lib/apt/lists/*
+   && apt-get -y upgrade \
+   && apt-get -y autoremove \
+   && rm -rf /var/lib/apt/lists/*
 
 # add our user and group first to make sure their IDs get assigned
 # consistently, regardless of whatever dependencies get added
 RUN groupadd -r mysql && useradd -r -g mysql mysql
 
-ENV MYSQL_VERSION 8.0
-ENV TERM linux
+ENV MYSQL_VERSION=8.0
+ENV TERM=linux
 
 # Install perl.
 # Install dig, for discovering IP addresses of other Galera nodes.
@@ -39,11 +39,11 @@ RUN echo "deb http://repo.percona.com/apt jammy main" > /etc/apt/sources.list.d/
 RUN echo "deb-src http://repo.percona.com/apt jammy main" >> /etc/apt/sources.list.d/percona.list
 
 RUN { \
-                echo percona-server-server-${MYSQL_VERSION} percona-server-server/root_password password ''; \
-        } | debconf-set-selections \
-        && apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y percona-xtradb-cluster-client-"${MYSQL_VERSION}" \
-           percona-xtradb-cluster-common-"${MYSQL_VERSION}" percona-xtradb-cluster-server-"${MYSQL_VERSION}" \
-        && rm -rf /var/lib/apt/lists/*
+   echo percona-server-server-${MYSQL_VERSION} percona-server-server/root_password password ''; \
+   } | debconf-set-selections \
+   && apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y percona-xtradb-cluster-client-"${MYSQL_VERSION}" \
+   percona-xtradb-cluster-common-"${MYSQL_VERSION}" percona-xtradb-cluster-server-"${MYSQL_VERSION}" \
+   && rm -rf /var/lib/apt/lists/*
 
 COPY my.cnf /etc/mysql/my.cnf
 COPY cluster.cnf /etc/mysql/conf.d/cluster.cnf

integration/cloudbuild/testbase/Dockerfile

@@ -5,7 +5,7 @@ WORKDIR /testbase
 
 ARG GOFLAGS=""
 ENV GOFLAGS=$GOFLAGS
-ENV GOPATH /go
+ENV GOPATH=/go
 
 RUN apt-get update && apt-get install -y \
   build-essential \
@@ -27,13 +27,13 @@ RUN curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/i
 RUN curl https://binaries.cockroachdb.com/cockroach-v22.2.7.linux-amd64.tgz | tar -xz && cp -i cockroach-v22.2.7.linux-amd64/cockroach /usr/local/bin/
 
 RUN mkdir protoc && \
-    (cd protoc && \
-    PROTOC_VERSION="3.20.1" && \
-    PROTOC_ZIP="protoc-${PROTOC_VERSION}-linux-x86_64.zip" && \
-    wget "https://github.com/google/protobuf/releases/download/v${PROTOC_VERSION}/${PROTOC_ZIP}" && \
-    unzip -o ${PROTOC_ZIP} -d /usr/local bin/protoc && \
-    unzip -o ${PROTOC_ZIP} -d /usr/local 'include/*' \
-    )
-ENV PATH /usr/local/bin:$PATH
+  (cd protoc && \
+  PROTOC_VERSION="3.20.1" && \
+  PROTOC_ZIP="protoc-${PROTOC_VERSION}-linux-x86_64.zip" && \
+  wget "https://github.com/google/protobuf/releases/download/v${PROTOC_VERSION}/${PROTOC_ZIP}" && \
+  unzip -o ${PROTOC_ZIP} -d /usr/local bin/protoc && \
+  unzip -o ${PROTOC_ZIP} -d /usr/local 'include/*' \
+  )
+ENV PATH=/usr/local/bin:$PATH
 
-ENV PATH $GOPATH/bin:/testbase/protoc/bin:$PATH
+ENV PATH=$GOPATH/bin:/testbase/protoc/bin:$PATH