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Optimise the Dockerfile for Docker Hub Automated Builds. Installs ca-certificates, required for the "release message" feature. With the current [mailhog/mailhog](https://hub.docker.com/r/mailhog/mailhog/) docker image, releasing messages to an SMTP server via TLS fails: > Failed to release message: x509: failed to load system roots and no roots > provided Removes any build dependencies after install, optimising docker image size. The image size is about the same as the Rocker based build, but works with plain Docker and can therefore be used via Docker Hub Automated Builds. Runs with a non-privileged user account instead of as root, increasing security. Assigning the user ID 1000 allows host volume mounts (e.g. for maildir storage) to work seamlessly with docker-machine. Installs MailHog in `/usr/local/bin`, which is in the system `PATH` and allows to use a simplified entrypoint (`MailHog`).
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#
# MailHog Dockerfile
#
Example Dockerfile
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FROM golang:alpine as builder
Optimise the Dockerfile for Docker Hub Automated Builds. Installs ca-certificates, required for the "release message" feature. With the current [mailhog/mailhog](https://hub.docker.com/r/mailhog/mailhog/) docker image, releasing messages to an SMTP server via TLS fails: > Failed to release message: x509: failed to load system roots and no roots > provided Removes any build dependencies after install, optimising docker image size. The image size is about the same as the Rocker based build, but works with plain Docker and can therefore be used via Docker Hub Automated Builds. Runs with a non-privileged user account instead of as root, increasing security. Assigning the user ID 1000 allows host volume mounts (e.g. for maildir storage) to work seamlessly with docker-machine. Installs MailHog in `/usr/local/bin`, which is in the system `PATH` and allows to use a simplified entrypoint (`MailHog`).
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# Install MailHog:
RUN apk --no-cache add --virtual build-dependencies \
git \
&& mkdir -p /root/gocode \
&& export GOPATH=/root/gocode \
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&& go get github.com/mailhog/MailHog
Optimise the Dockerfile for Docker Hub Automated Builds. Installs ca-certificates, required for the "release message" feature. With the current [mailhog/mailhog](https://hub.docker.com/r/mailhog/mailhog/) docker image, releasing messages to an SMTP server via TLS fails: > Failed to release message: x509: failed to load system roots and no roots > provided Removes any build dependencies after install, optimising docker image size. The image size is about the same as the Rocker based build, but works with plain Docker and can therefore be used via Docker Hub Automated Builds. Runs with a non-privileged user account instead of as root, increasing security. Assigning the user ID 1000 allows host volume mounts (e.g. for maildir storage) to work seamlessly with docker-machine. Installs MailHog in `/usr/local/bin`, which is in the system `PATH` and allows to use a simplified entrypoint (`MailHog`).
2016-10-23 10:42:22 +00:00
feat: use multistage build to minimize container size
2020-09-30 14:49:03 +00:00
FROM alpine:3
Optimise the Dockerfile for Docker Hub Automated Builds. Installs ca-certificates, required for the "release message" feature. With the current [mailhog/mailhog](https://hub.docker.com/r/mailhog/mailhog/) docker image, releasing messages to an SMTP server via TLS fails: > Failed to release message: x509: failed to load system roots and no roots > provided Removes any build dependencies after install, optimising docker image size. The image size is about the same as the Rocker based build, but works with plain Docker and can therefore be used via Docker Hub Automated Builds. Runs with a non-privileged user account instead of as root, increasing security. Assigning the user ID 1000 allows host volume mounts (e.g. for maildir storage) to work seamlessly with docker-machine. Installs MailHog in `/usr/local/bin`, which is in the system `PATH` and allows to use a simplified entrypoint (`MailHog`).
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# Add mailhog user/group with uid/gid 1000.
# This is a workaround for boot2docker issue #581, see
# https://github.com/boot2docker/boot2docker/issues/581
RUN adduser -D -u 1000 mailhog
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COPY --from=builder /root/gocode/bin/MailHog /usr/local/bin/
Optimise the Dockerfile for Docker Hub Automated Builds. Installs ca-certificates, required for the "release message" feature. With the current [mailhog/mailhog](https://hub.docker.com/r/mailhog/mailhog/) docker image, releasing messages to an SMTP server via TLS fails: > Failed to release message: x509: failed to load system roots and no roots > provided Removes any build dependencies after install, optimising docker image size. The image size is about the same as the Rocker based build, but works with plain Docker and can therefore be used via Docker Hub Automated Builds. Runs with a non-privileged user account instead of as root, increasing security. Assigning the user ID 1000 allows host volume mounts (e.g. for maildir storage) to work seamlessly with docker-machine. Installs MailHog in `/usr/local/bin`, which is in the system `PATH` and allows to use a simplified entrypoint (`MailHog`).
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USER mailhog
Example Dockerfile
2014-10-29 17:01:13 +00:00
Optimise the Dockerfile for Docker Hub Automated Builds. Installs ca-certificates, required for the "release message" feature. With the current [mailhog/mailhog](https://hub.docker.com/r/mailhog/mailhog/) docker image, releasing messages to an SMTP server via TLS fails: > Failed to release message: x509: failed to load system roots and no roots > provided Removes any build dependencies after install, optimising docker image size. The image size is about the same as the Rocker based build, but works with plain Docker and can therefore be used via Docker Hub Automated Builds. Runs with a non-privileged user account instead of as root, increasing security. Assigning the user ID 1000 allows host volume mounts (e.g. for maildir storage) to work seamlessly with docker-machine. Installs MailHog in `/usr/local/bin`, which is in the system `PATH` and allows to use a simplified entrypoint (`MailHog`).
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WORKDIR /home/mailhog
ENTRYPOINT ["MailHog"]
# Expose the SMTP and HTTP ports:
EXPOSE 1025 8025
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