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refactor: extract scripts from install-docker (#117)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| #!/usr/bin/env bash | ||
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| if [[ $EUID == 0 ]]; then export SUDO=""; else export SUDO="sudo"; fi | ||
|
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| # grab Docker version | ||
| if [[ "$PARAM_VERSION" == "latest" ]]; then | ||
| # extract latest version from GitHub releases API | ||
| declare -i INDEX=0 | ||
|
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| while : | ||
| do | ||
| INDEX_VERSION=$(curl --silent --show-error --location --fail --retry 3 \ | ||
| https://api.github.com/repos/docker/cli/tags | \ | ||
| jq --argjson index "$INDEX" '.[$index].name') | ||
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| # filter out betas & release candidates | ||
| # shellcheck disable=SC2143 # Doesn't apply to this case. | ||
| if [[ $(echo "$INDEX_VERSION" | grep -v beta | grep -v rc) ]]; then | ||
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| # can't use substring expression < 0 on macOS | ||
| DOCKER_VERSION="${INDEX_VERSION:1:$((${#INDEX_VERSION} - 1 - 1))}" | ||
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| echo "Latest stable version of Docker is $DOCKER_VERSION" | ||
| break | ||
| else | ||
| INDEX=$((INDEX+1)) | ||
| fi | ||
| done | ||
| else | ||
| DOCKER_VERSION="$PARAM_VERSION" | ||
| echo "Selected version of Docker is $DOCKER_VERSION" | ||
| fi | ||
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| # check if Docker needs to be installed | ||
| DOCKER_VERSION_NUMBER="${DOCKER_VERSION:1}" | ||
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| if command -v docker >> /dev/null 2>&1; then | ||
| if docker --version | grep "$DOCKER_VERSION_NUMBER" >> /dev/null 2>&1; then | ||
| echo "Docker $DOCKER_VERSION is already installed" | ||
| exit 0 | ||
| else | ||
| echo "A different version of Docker is installed ($(docker --version)); removing it" | ||
| $SUDO rm -f "$(command -v docker)" | ||
| fi | ||
| fi | ||
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| # get binary download URL for specified version | ||
| if uname -a | grep Darwin >> /dev/null 2>&1; then | ||
| PLATFORM=mac | ||
| else | ||
| PLATFORM=linux | ||
| fi | ||
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| DOCKER_BINARY_URL="https://download.docker.com/$PLATFORM/static/stable/x86_64/docker-$DOCKER_VERSION_NUMBER.tgz" | ||
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| # download binary tarball | ||
| DOWNLOAD_DIR="$(mktemp -d)" | ||
| DOWNLOAD_FILE="${DOWNLOAD_DIR}/docker.tgz" | ||
| curl --output "$DOWNLOAD_FILE" \ | ||
| --silent --show-error --location --fail --retry 3 \ | ||
| "$DOCKER_BINARY_URL" | ||
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| tar xf "$DOWNLOAD_FILE" -C "$DOWNLOAD_DIR" && rm -f "$DOWNLOAD_FILE" | ||
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| # install Docker binaries | ||
| BINARIES=$(ls "${DOWNLOAD_DIR}/docker") | ||
| $SUDO mv "$DOWNLOAD_DIR"/docker/* "$PARAM_INSTALL_DIR" | ||
| $SUDO rm -rf "$DOWNLOAD_DIR" | ||
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| for binary in $BINARIES | ||
| do | ||
| $SUDO chmod +x "$PARAM_INSTALL_DIR/$binary" | ||
| done | ||
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| # verify version | ||
| echo "$(docker --version) has been installed to $(command -v docker)" |