如何向docker容器添加SSH访问

Question

FROM alpine:3.10 as builder

ARG VERSION=7.12.0
ARG DISTRO=tomcat
ARG SNAPSHOT=true

ARG EE=false
ARG USER
ARG PASSWORD

RUN apk add --no-cache \
        ca-certificates \
        maven \
        tar \
        wget \
        xmlstarlet

COPY settings.xml download.sh camunda-tomcat.sh camunda-wildfly.sh  /tmp/

RUN /tmp/download.sh

#Enable Basic AUTH
COPY web.xml /camunda/webapps/engine-rest/WEB-INF/web.xml 

##### FINAL IMAGE #####

FROM alpine:3.10

ARG VERSION=7.12.0



ENV CAMUNDA_VERSION=${VERSION}
ENV DB_DRIVER=com.microsoft.sqlserver.jdbc.SQLServerDriver
ENV DB_URL=xx
ENV DB_USERNAME=dbname@xx
ENV DB_PASSWORD=xx
ENV DB_CONN_MAXACTIVE=20
ENV DB_CONN_MINIDLE=5
ENV DB_CONN_MAXIDLE=20
ENV DB_VALIDATE_ON_BORROW=true
ENV DB_VALIDATION_QUERY="SELECT 1"
ENV SKIP_DB_CONFIG=
ENV WAIT_FOR=
ENV WAIT_FOR_TIMEOUT=120
ENV TZ=UTC
ENV DEBUG=TRUE
ENV JAVA_OPTS="-Xmx768m -XX:MaxMetaspaceSize=256m"

EXPOSE 8080 8000

# Downgrading wait-for-it is necessary until this PR is merged
# https://github.com/vishnubob/wait-for-it/pull/68
RUN apk add --no-cache \
        bash \
        ca-certificates \
        openjdk11-jre-headless \
        tzdata \
        tini \
        xmlstarlet \
    && wget -O  /usr/local/bin/wait-for-it.sh \
      "https://raw.githubusercontent.com/vishnubob/wait-for-it/a454892f3c2ebbc22bd15e446415b8fcb7c1cfa4/wait-for-it.sh" --no-check-certificate \
    && chmod +x /usr/local/bin/wait-for-it.sh

RUN addgroup -g 1000 -S camunda && \
    adduser -u 1000 -S camunda -G camunda -h /camunda -s /bin/bash -D camunda
WORKDIR /camunda
USER camunda

#MSSQL SERVER JDBC DRIVER INSTALL
COPY mssql-jdbc-7.2.2.jre11.jar /camunda/lib/

ENTRYPOINT ["/sbin/tini", "--"]
CMD ["./camunda.sh"]

COPY --chown=camunda:camunda --from=builder /camunda .

但是问题是，ENTRYPOINT和CMD都只允许一个命令，所以我不确定如何启动SSH

# ssh
ENV SSH_PASSWD "root:xyz"
RUN apt-get update \
        && apt-get install -y --no-install-recommends dialog \
        && apt-get update \
    && apt-get install -y --no-install-recommends openssh-server \
    && echo "$SSH_PASSWD" | chpasswd 

COPY sshd_config /etc/ssh/
COPY init.sh /usr/local/bin/
RUN chmod u+x /usr/local/bin/init.sh

EXPOSE 8000 2222

# end ssh config

Answer 1

Azure文档在这方面可能会更好一些，但您就快到了。

首先，由于您使用的是Alpine Linux，您的Dockerfile步骤与他们的示例有点不同。特别要注意的是，您使用apk add而不是apt-get install。请参阅本指南，其中有使用Alpine为Azure设置SSH的示例。

RUN apk add openssh \
  && echo "root:Docker!" | chpasswd
COPY ./path/to/sshd_config /etc/ssh/

sshd_config应该如下所示：

Port                    2222
ListenAddress           0.0.0.0
LoginGraceTime          180
X11Forwarding           yes
Ciphers                 aes128-cbc,3des-cbc,aes256-cbc,aes128-ctr,aes192-ctr,aes256-ctr
MACs                    hmac-sha1,hmac-sha1-96
StrictModes             yes
SyslogFacility          DAEMON
PasswordAuthentication  yes
PermitEmptyPasswords    no
PermitRootLogin         yes
Subsystem               sftp internal-sftp
PidFile                 /etc/ssh/run/sshd.pid
HostKey                 /etc/ssh/ssh_host_rsa_key

#!/bin/sh

# ...

# Start sshd for Azure
ssh-keygen -f /etc/ssh/ssh_host_rsa_key -N '' -t rsa
mkdir -p /etc/ssh/run
/usr/sbin/sshd

# Run any additional commands like ./camunda.sh