Dockerfile

FROM alpine:3.18

# This is the release of Vault to pull in.
ARG VAULT_VERSION=1.13.3

# Create a vault user and group first so the IDs get set the same way,
# even as the rest of this may change over time.
RUN addgroup vault && \
    adduser -S -G vault vault

# Set up certificates, our base tools, and Vault.
RUN set -eux; \
    apk add --no-cache ca-certificates gnupg openssl libcap su-exec dumb-init tzdata && \
    apkArch="$(apk --print-arch)"; \
    case "$apkArch" in \
        armhf) ARCH='arm' ;; \
        aarch64) ARCH='arm64' ;; \
        x86_64) ARCH='amd64' ;; \
        x86) ARCH='386' ;; \
        *) echo >&2 "error: unsupported architecture: $apkArch"; exit 1 ;; \
    esac && \
    VAULT_GPGKEY=C874011F0AB405110D02105534365D9472D7468F; \
    found=''; \
    for server in \
        hkps://keys.openpgp.org \
        hkps://keyserver.ubuntu.com \
        hkps://pgp.mit.edu \
    ; do \
        echo "Fetching GPG key $VAULT_GPGKEY from $server"; \
        gpg --batch --keyserver "$server" --recv-keys "$VAULT_GPGKEY" && found=yes && break; \
    done; \
    test -z "$found" && echo >&2 "error: failed to fetch GPG key $VAULT_GPGKEY" && exit 1; \
    mkdir -p /tmp/build && \
    cd /tmp/build && \
    wget https://releases.hashicorp.com/vault/${VAULT_VERSION}/vault_${VAULT_VERSION}_linux_${ARCH}.zip && \
    wget https://releases.hashicorp.com/vault/${VAULT_VERSION}/vault_${VAULT_VERSION}_SHA256SUMS && \
    wget https://releases.hashicorp.com/vault/${VAULT_VERSION}/vault_${VAULT_VERSION}_SHA256SUMS.sig && \
    gpg --batch --verify vault_${VAULT_VERSION}_SHA256SUMS.sig vault_${VAULT_VERSION}_SHA256SUMS && \
    grep vault_${VAULT_VERSION}_linux_${ARCH}.zip vault_${VAULT_VERSION}_SHA256SUMS | sha256sum -c && \
    unzip -d /tmp/build vault_${VAULT_VERSION}_linux_${ARCH}.zip && \
    cp /tmp/build/vault /bin/vault && \
    if [ -f /tmp/build/EULA.txt ]; then mkdir -p /usr/share/doc/vault; mv /tmp/build/EULA.txt /usr/share/doc/vault/EULA.txt; fi && \
    if [ -f /tmp/build/TermsOfEvaluation.txt ]; then mkdir -p /usr/share/doc/vault; mv /tmp/build/TermsOfEvaluation.txt /usr/share/doc/vault/TermsOfEvaluation.txt; fi && \
    cd /tmp && \
    rm -rf /tmp/build && \
    gpgconf --kill dirmngr && \
    gpgconf --kill gpg-agent && \
    apk del gnupg openssl && \
    rm -rf /root/.gnupg

# /vault/logs is made available to use as a location to store audit logs, if
# desired; /vault/file is made available to use as a location with the file
# storage backend, if desired; the server will be started with /vault/config as
# the configuration directory so you can add additional config files in that
# location.
RUN mkdir -p /vault/logs && \
    mkdir -p /vault/file && \
    mkdir -p /vault/config && \
    chown -R vault:vault /vault

# Expose the logs directory as a volume since there's potentially long-running
# state in there
VOLUME /vault/logs

# Expose the file directory as a volume since there's potentially long-running
# state in there
VOLUME /vault/file

# 8200/tcp is the primary interface that applications use to interact with
# Vault.
EXPOSE 8200

# The entry point script uses dumb-init as the top-level process to reap any
# zombie processes created by Vault sub-processes.
#
# For production derivatives of this container, you shoud add the IPC_LOCK
# capability so that Vault can mlock memory.
COPY docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh
ENTRYPOINT ["docker-entrypoint.sh"]

# By default you'll get a single-node development server that stores everything
# in RAM and bootstraps itself. Don't use this configuration for production.
CMD ["server", "-dev"]